Portal:History

The History Portal

Historia by Nikolaos Gyzis

History (derived from Ancient Greek ἱστορία (historía) 'inquiry; knowledge acquired by investigation') is the systematic study and documentation of human activity. The time period of events before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries.

History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the present.

Stories common to a particular culture, but not supported by external sources (such as the tales surrounding King Arthur), are usually classified as cultural heritage or legends. History differs from myth in that it is supported by verifiable evidence. However, ancient cultural influences have helped spawn variant interpretations of the nature of history which have evolved over the centuries and continue to change today. The modern study of history is wide-ranging, and includes the study of specific regions and the study of certain topical or thematic elements of historical investigation. History is often taught as a part of primary and secondary education, and the academic study of history is a major discipline in university studies.

Herodotus, a 5th-century BC Greek historian, is often considered the "father of history" (as he was one of the first historians) in the Western tradition, although he has also been criticized as the "father of lies". Along with his contemporary Thucydides, he helped form the foundations for the modern study of past events and societies. Their works continue to be read today, and the gap between the culture-focused Herodotus and the military-focused Thucydides remains a point of contention or approach in modern historical writing. In East Asia, a state chronicle, the Spring and Autumn Annals, was reputed to date from as early as 722 BC, although only 2nd-century BC texts have survived. (Full article...)

Featured articles –

Featured articles are displayed here, which represent some of the best content on English Wikipedia.

---

• 

  Ælle's name is visible in this line from the Parker manuscript of the Anglo-Saxon Chronicle, written c. 890

  
  Ælle (also Aelle or Ella) is recorded in early sources as the first king of the South Saxons, reigning in what is now called Sussex, England, from 477 to perhaps as late as 514.
  
  According to the Anglo-Saxon Chronicle, Ælle and three of his sons are said to have landed at a place called Cymensora and fought against the local Britons. The chronicle goes on to report a victory in 491, at present day Pevensey, where the battle ended with the Saxons slaughtering their opponents to the last man. (Full article...)
• 

  A Prussian infantry advance during the Battle of Hohenfriedberg, as depicted by Carl Röchling

  
  The Second Silesian War (German: Zweiter Schlesischer Krieg) was a war between Prussia and Austria that lasted from 1744 to 1745 and confirmed Prussia's control of the region of Silesia (now in south-western Poland). The war was fought mainly in Silesia, Bohemia, and Upper Saxony and formed one theatre of the wider War of the Austrian Succession. It was the second of three Silesian Wars fought between Frederick the Great's Prussia and Maria Theresa's Austria in the mid-18th century, all three of which ended in Prussian control of Silesia.
  
  The conflict has been viewed as a continuation of the First Silesian War, which had concluded only two years before. After the Treaty of Berlin ended hostilities between Austria and Prussia in 1742, the Habsburg monarchy's fortunes improved greatly in the continuing War of the Austrian Succession. As Austria expanded its alliances with the 1743 Treaty of Worms, Prussia entered a renewed alliance with Austria's enemies in the League of Frankfurt and rejoined the war, hoping to prevent a resurgent Austria from taking back Silesia. (Full article...)
• 

  Lakoba in 1931

  
  Nestor Apollonovich Lakoba(Georgian: ნესტორ აპოლონის ძე ლაკობა [Nest'or Ap'olonis Dze Lak'oba]; 1 May 1893 – 28 December 1936) was an Abkhaz communist leader. Lakoba helped establish Bolshevik power in Abkhazia in the aftermath of the Russian Revolution, and served as the head of Abkhazia after its conquest by the Bolshevik Red Army in 1921. While in power, Lakoba saw that Abkhazia was initially given autonomy within the USSR as the Socialist Soviet Republic of Abkhazia. Though nominally a part of the Georgian Soviet Socialist Republic with a special status of "union republic," the Abkhaz SSR was effectively a separate republic, made possible by Lakoba's close relationship with Joseph Stalin. Lakoba successfully opposed the extension of collectivization of Abkhazia, though in return Lakoba was forced to accept a downgrade of Abkhazia's status to that of an autonomous republic within the Georgian SSR.
  
  Popular in Abkhazia due to his ability to resonate with the people, Lakoba maintained a close relationship with Stalin, who would frequently holiday in Abkhazia during the 1920s and 1930s. This relationship saw Lakoba become the rival of one of Stalin's other confidants, Lavrentiy Beria, who was in charge of the Transcaucasian Socialist Federative Soviet Republic, which included Georgia. During a visit to Beria in Tbilisi in December 1936, Lakoba was poisoned, allowing Beria to consolidate his control over Abkhazia and all of Georgia and to discredit Lakoba and his family as enemies of the state. Rehabilitated after the death of Stalin in 1953, Lakoba is now revered as a national hero in Abkhazia. (Full article...)
• 

  Soviet and German deployments near Prokhorovka on the eve of the engagement of 12 July. Positions of the II SS Panzer Corps are in blue; the red dashed line shows the position of Soviet forces directly opposing the SS Panzer Corps. The black dashed line is the railway running from Prokhorovka southwest through the Psel corridor (the strip of land between the Psel River and a tributary of the Northern Donets River).

  
  The Battle of Prokhorovka was fought on 12 July 1943 near Prokhorovka, 87 kilometres (54 mi) southeast of Kursk, in the Soviet Union, during the Second World War. Taking place on the Eastern Front, the engagement was part of the wider Battle of Kursk and occurred when the 5th Guards Tank Army of the Soviet Red Army attacked the II SS-Panzer Corps of the German Waffen-SS in one of the largest tank battles in history.
  
  In April 1943, the German leadership began preparing for Operation Citadel, with the objective of enveloping and destroying the Soviet forces in the Kursk salient by attacking and breaking through the base of the salient from north and south simultaneously. The German offensive was delayed several times because of the vacillation of the leadership (Hitler repeatedly delayed launching the attack so that more Tiger tanks could be delivered to the front, hoping that a technical advantage would help him win the offensive) and the addition of more forces and new equipment. The Soviet high command, Stavka, had learned of the German intentions and so used the delay to prepare a series of defensive belts along the routes of the planned German offensive. The Soviet leadership also massed several armies deep behind their defences as the Stavka Reserve. The army group, the Steppe Front, was to launch counteroffensives once the German strength had dissipated. The 5th Guards Tank Army was the primary armoured formation of the Steppe Front. (Full article...)
• 

  Private Bruce Kingsbury, c. 1940

  
  Bruce Steel Kingsbury, VC (8 January 1918 – 29 August 1942) was an Australian soldier of the Second World War. Serving initially in the Middle East, he later gained renown for his actions during the Battle of Isurava, one of many battles forming the Kokoda Track Campaign in the south-east of the island of New Guinea, then part of the Australian Territory of Papua (now Papua New Guinea) . His bravery during the battle was recognised with the Victoria Cross, the highest decoration for gallantry "in the face of the enemy" that can be awarded to members of the British and Commonwealth armed forces. The first serviceman to receive the VC for actions on Australian territory, Kingsbury was a member of the 2/14th Infantry Battalion.
  
  On 29 August 1942, during the Battle of Isurava, Kingsbury was one of the few survivors of a platoon that had been overrun by the Japanese. He immediately volunteered to join a different platoon, which had been ordered to counter-attack. Rushing forward and firing his Bren gun from the hip, he cleared a path through the enemy and inflicted several casualties. Kingsbury was then shot by a sniper and killed instantly. His actions, which delayed the Japanese long enough for the Australians to fortify their positions, were instrumental in saving his battalion's headquarters and he was posthumously awarded the Victoria Cross as a result. (Full article...)
• 

  SMS Prinz Adalbert at full speed

  
  SMS Prinz Adalbert ("His Majesty's Ship Prince Adalbert") was an armored cruiser built in the early 1900s for the German Kaiserliche Marine (Imperial Navy), named after Prince Adalbert of Prussia, former Commander-in-Chief of the Prussian Navy. She was the lead ship of her class, which included a second ship, Friedrich Carl. Prinz Adalbert was built at the Imperial Dockyard in Kiel. Her keel was laid in April 1900, and she was launched in June 1901. Her completion in January 1904 had been delayed by a surplus of construction projects at the Imperial Dockyard. She was armed with a main battery of four 21 cm (8.3 in) guns, a significant improvement over the previous armored cruiser, Prinz Heinrich, which carried only two 24 cm (9.4 in) guns. The ship was capable of a top speed of 20 kn (37 km/h; 23 mph).
  
  Upon commissioning, Prinz Adalbert served as a gunnery training ship, a role she held for the majority of her career. She trained with the Heimatflotte (Home Fleet), later renamed the Hochseeflotte (High Seas Fleet), throughout the early 1900s, and she made several visits to foreign countries. After the outbreak of World War I in July 1914, she was assigned to the reconnaissance forces in the Baltic and was tasked with protecting the German coast from Russian attacks. After her sister ship was sunk in November 1914, she became the flagship of the cruiser squadron in the Baltic. She conducted operations against Russian forces, including bombarding the port of Libau in support of the German Army. She was torpedoed by a British submarine in July 1915, but was able to return to port and was repaired. She was torpedoed a second time on 23 October 1915; the torpedo detonated her ammunition magazines and destroyed the ship. She sank quickly with heavy loss of life; only three men were rescued from a crew of 675. This proved to be the worst German naval disaster in the Baltic during the war. (Full article...)
• 

  During the Baltimore Riot, the 6th Massachusetts became the first Union unit to take casualties in action on April 19, 1861.

  
  The 6th Regiment Massachusetts Volunteer Militia was a peacetime infantry regiment that was activated for federal service in the Union army for three separate terms during the American Civil War (1861-1865). The regiment gained notoriety as the first unit in the Union Army to suffer fatal casualties in action during the Civil War in the Baltimore Riot and the first militia unit to arrive in Washington D.C. in response to President Abraham Lincoln's initial call for 75,000 troops. Private Luther C. Ladd of the 6th Massachusetts is often referred to as the first Union soldier killed in action during the war.
  
  In the years immediately preceding the war and during its first enlistment, the regiment consisted primarily of companies from Middlesex County. During its first term of service, four out of ten companies of the regiment were from Lowell, Massachusetts. Colonel Edward F. Jones commanded the regiment during its first term. He later commanded the 26th Massachusetts and was awarded the honorary grade of brevet brigadier general. During its second and third terms of service, the unit was commanded by Colonel Albert S. Follansbee. (Full article...)
• 

  

  
  Northampton War Memorial, officially the Town and County War Memorial, is a First World War memorial on Wood Hill in the centre of Northampton, the county town of Northamptonshire, in central England. Designed by architect Sir Edwin Lutyens, it is a Stone of Remembrance flanked by twin obelisks draped with painted stone flags standing in a small garden in what was once part of the churchyard of All Saints' Church.
  
  Discussion of a war memorial for Northampton began shortly after the armistice in 1918, and from July 1919 a temporary wooden cenotaph stood on Abington Street in the town centre. The Northamptonshire War Memorial Committee commissioned Lutyens to design a permanent memorial. The monument's design was completed and approved quickly, but its installation was delayed by six years until the site could be purchased from the Church of England, which required a faculty from the local diocese. The memorial was finally unveiled on 11 November 1926 after a service and a parade including local schoolchildren and civic leaders. (Full article...)
• 

  The western Mediterranean in 218 BC

  
  The Second Punic War (218 to 201 BC) was the second of three wars fought between Carthage and Rome, the two main powers of the western Mediterranean in the 3rd century BC. For 17 years the two states struggled for supremacy, primarily in Italy and Iberia, but also on the islands of Sicily and Sardinia and, towards the end of the war, in North Africa. After immense materiel and human losses on both sides the Carthaginians were defeated. Macedonia, Syracuse and several Numidian kingdoms were drawn into the fighting, and Iberian and Gallic forces fought on both sides. There were three main military theatres during the war: Italy, where Hannibal defeated the Roman legions repeatedly, with occasional subsidiary campaigns in Sicily, Sardinia and Greece; Iberia, where Hasdrubal, a younger brother of Hannibal, defended the Carthaginian colonial cities with mixed success before moving into Italy; and Africa, where Rome finally won the war.
  
  The First Punic War had ended in a Roman victory in 241 BC after 23 years and enormous losses on both sides. After the war Carthage expanded its holdings in Iberia where in 219 BC a Carthaginian army under Hannibal besieged, captured and sacked the pro-Roman city of Saguntum. In early 218 BC Rome declared war on Carthage, beginning the Second Punic War. Later that year, Hannibal surprised the Romans by marching his army overland from Iberia, through Gaul and over the Alps to Cisalpine Gaul (modern northern Italy). Reinforced by Gallic allies he obtained crushing victories over the Romans at the battles of Trebia (218) and Lake Trasimene (217). Moving to southern Italy in 216 Hannibal defeated the Romans again at the battle of Cannae, where he annihilated the largest army the Romans had ever assembled. After the death or capture of more than 120,000 Roman troops in less than three years, many of Rome's Italian allies, notably Capua, defected to Carthage, giving Hannibal control over much of southern Italy. As Syracuse and Macedonia joined the Carthaginian side after Cannae, the conflict spread. Between 215 and 210 BC the Carthaginians attempted to capture Roman-held Sicily and Sardinia, but were unsuccessful. The Romans took drastic steps to raise new legions: enrolling slaves, criminals and those who did not meet the usual property qualification; this vastly increased the number of men they had under arms. For the next decade the war in southern Italy continued, with Roman armies slowly recapturing most of the Italian cities that had joined Carthage. (Full article...)
• 

  

  Air Commodore Cobby (left) and Group Captain Caldwell at Morotai in January 1945

  
  The "Morotai Mutiny" was an incident in April 1945 involving members of the Australian First Tactical Air Force based on the island of Morotai, in the Dutch East Indies. Eight senior pilots, including Australia's leading flying ace, Group Captain Clive Caldwell, tendered their resignations to protest what they perceived as the relegation of Royal Australian Air Force (RAAF) fighter squadrons to strategically unimportant ground attack missions against Japanese positions that had been bypassed in the Allies' "island-hopping" campaign. A government investigation vindicated the "mutineers", and three high-ranking officers at First Tactical Air Force Headquarters, including the commander, Air Commodore Harry Cobby, the Australian Flying Corps' top-scoring ace in World War I, were relieved of their posts.
  
  George Odgers summed up the cause of the incident in the official history of the RAAF in World War II as "the conviction of a group of young leaders that they were engaging in operations that were not militarily justifiable—a conviction widely shared also by many Australian soldiers and political leaders." Odgers concluded that the ensuing inquiry "made it clear that almost everyone concerned acted from the highest motives, and was convinced that, in the crisis, he acted wisely". (Full article...)
• 

  

  The remains of King Richard III as discovered in situ at the site of Grey Friars Priory, Leicester

  
  The remains of Richard III, the last English king killed in battle, were discovered within the site of the former Grey Friars Priory in Leicester, England, in September 2012. Following extensive anthropological and genetic testing, the remains were ultimately reinterred at Leicester Cathedral on 26 March 2015.
  
  Richard III, the final ruler of the Plantagenet dynasty, was killed on 22 August 1485 in the Battle of Bosworth Field, the last significant battle of the Wars of the Roses. His body was taken to Greyfriars, Leicester, where it was buried in a crude grave in the friary church. Following the friary's dissolution in 1538 and subsequent demolition, Richard's tomb was lost. An erroneous account arose that Richard's bones had been thrown into the River Soar at the nearby Bow Bridge. (Full article...)
• 

  Modern view of Byram's Ford

  
  The Battle of Byram's Ford (also known as the Battle of Big Blue River and the Battle of the Blue) was fought on October 22 and 23, 1864, in Missouri during Price's Raid, a campaign of the American Civil War. With the Confederate States of America collapsing, Major General Sterling Price of the Confederate States Army conducted an invasion of the state of Missouri in late 1864. Union forces led Price to abandon goals of capturing the cities of St. Louis and Jefferson City, and he turned west with his army towards Kansas City.
  
  On October 22, Price's army found itself caught between two Union forces, commanded by Major Generals James G. Blunt and Alfred Pleasonton. Part of Price's force conducted a delaying action against Pleasonton in the Second Battle of Independence, while the division of Brigadier General Joseph O. Shelby broke Blunt's line at Byram's Ford on the Big Blue River by crossing at an unguarded ford above the Union defenses. The Union defenders were forced to retreat to the Kansas state line, and the 2nd Kansas State Militia Infantry Regiment was caught at the Mockbee Farm and overwhelmed. Meanwhile, Pleasonton's men pushed Price's rear guard across the Big Blue in the Second Battle of Independence. (Full article...)
• 

  Thomas Crisp, VC

  
  Thomas Crisp VC, DSC, RNR (28 April 1876 – 15 August 1917) was an English sailor and posthumous recipient of the Victoria Cross. Crisp, in civilian life a commercial fisherman operating from Lowestoft in Suffolk, earned his award after being killed during the defence of his vessel, the armed naval smack Nelson, in the North Sea against an attack from a German submarine in 1917.
  
  Crisp's self-sacrifice in the face of this "unequal struggle" was used by the government to bolster morale during some of the toughest days of the First World War for Britain, in late 1917, during which Britain was suffering heavy losses at the Battle of Passchendaele. His exploit was read aloud by David Lloyd George in the Houses of Parliament and made headline news for nearly a week. (Full article...)
• 

  An AMX-30E on display at the Museum of Armored Vehicles of El Goloso, in Spain

  
  The AMX-30E (E stands for España, Spanish for Spain) is a Spanish main battle tank based on France's AMX-30. Although originally the Spanish government sought to procure the German Leopard 1, the AMX-30 was ultimately awarded the contract due to its lower price and the ability to manufacture it in Spain. 280 units were manufactured by Santa Bárbara Sistemas for the Spanish Army, between 1974 and 1983.
  
  First acquired in 1970, the tank was to supplement Spain's fleet of M47 and M48 Patton United States tanks and to reduce Spain's reliance on American equipment in its army. The first 19 AMX-30 tanks were acquired from France in 1970, while another 280 were assembled in Spain. It was Spain's first mass-produced tank and developed the country's industry to the point where the government felt it could produce a tank on its own, leading to the development of the Lince tank project in 1985. It also offered Santa Bárbara Sistemas the experience which led to the production of the Leopard 2E in late 2003. Although final assembly was carried out by Santa Bárbara Sistemas, the production of the AMX-30E also included other companies in the country. Total production within Spain amounted to as much as 65% of the tank. (Full article...)
• 

  

  
  The Maya civilization (/ˈmaɪə/) of the Mesoamerican people is known by its ancient temples and glyphs. Its Maya script is the most sophisticated and highly developed writing system in the pre-Columbian Americas. It is also noted for its art, architecture, mathematics, calendar, and astronomical system.
  
  The Maya civilization developed in the Maya Region, an area that today comprises southeastern Mexico, all of Guatemala and Belize, and the western portions of Honduras and El Salvador. It includes the northern lowlands of the Yucatán Peninsula and the highlands of the Sierra Madre, the Mexican state of Chiapas, southern Guatemala, El Salvador, and the southern lowlands of the Pacific littoral plain. Today, their descendants, known collectively as the Maya, number well over 6 million individuals, speak more than twenty-eight surviving Mayan languages, and reside in nearly the same area as their ancestors. (Full article...)

Featured picture

• 

  The "Theatre" at Petra

  Photo: Douglas Perkins

  Petra is an archaeological site in Jordan, lying in a basin among the mountains which form the eastern flank of Wadi Araba, the great valley running from the Dead Sea to the Gulf of Aqaba. It is famous for having many stone structures carved into the rock.
• 

  Schutterij

  De Magere Compagnie (completed 1637), which depicts a company of schutterij, a voluntary city guard or citizen militia in the medieval and early modern Netherlands. Frans Hals was commissioned to create this, but he was unable to complete it after three years, and the company hired Pieter Codde to finish it. Group portraits such as this of schutterij were known as schuttersstuk, and were popular among the guards themselves.
• 

  Operation Ivy

  Photo: United States Department of Energy

  The mushroom cloud from the Ivy Mike nuclear test, one of two tests conducted as part of Operation Ivy at the Pacific Proving Grounds on Elugelab in the Marshall Islands. Mike was the first successful full-scale test of a multi-megaton thermonuclear weapon, and it left an underwater crater 6,240 ft (1,900 m) wide and 164 ft (50 m) deep where the island had been.
• 

  Cliff Palace

  Photo credit: Gustaf Nordenskiöld

  An 1891 photograph of Cliff Palace, the largest cliff dwelling—a structure built within caves and under outcroppings in cliffs—in North America, located in what is now Mesa Verde National Park, Colorado, USA. There are about 150 rooms in the 288 ft (88 m) long structure, although only 25 to 30 of those were used as living space by Ancient Pueblo Peoples. it is estimated that the population of Cliff Palace was roughly 100–150 people.
• 

  Arg-e Bam

  Photograph credit: Diego Delso

  The Arg-e Bam, in Kerman Province in southeastern Iran, is the largest adobe building in the world and a UNESCO World Heritage Site. The ancient citadel has a history dating back around two thousand years, to the Parthian Empire (248 BC – 224 AD), but most of its buildings were constructed during the Safavid dynasty. A strong earthquake on 26 December 2003 largely devastated the fortress and the nearby modern city of Bam. The Arg-e Bam, including the governor's residence, the main tower, the Four Seasons Palace and the hammam, were nearly totally destroyed; this photograph from 2016 shows the citadel partially reconstructed.
• 

  Historical reenactment

  Photo: Myrabella

  A historical reenactment is an educational or entertainment activity in which participants follow a prearranged plan to recreate aspects of a historical event or period. Here, a group reenacts the Battle of Waterloo, in which an Imperial French army under the command of Emperor Napoleon Bonaparte was defeated by the armies of the Seventh Coalition.
• 

  Samurai

  Photograph: Felice Beato

  A samurai with his sword and armor, photographed by Felice Beato c. 1860. The samurai, records of which date back to the early 10th-century Kokin Wakashū, were the military nobility of medieval and early-modern Japan. As Japan modernized during the Meiji period beginning in the late 1860s, the samurai lost much of their power, and the status was ultimately dissolved. However, samurai values remain common in Japanese society.
• 

  Shiva

  Photo: Los Angeles County Museum of Art

  A Chola dynasty sculpture depicting Shiva. In Hinduism, Shiva is the deity of destruction and one of the most important gods; in this sculpture he is dancing as Nataraja, the divine dancer who unravels the world in preparation for it being remade by Brahma.
• 

  Events in ballooning

  Chromolithograph: Romanet & cie.

  A 19th-century set of ten cards depicting events in the history of ballooning and parachuting. These cards depict, from left to right:
  
  Top row:
  

  1. Joseph Louis Gay-Lussac and Jean-Baptiste Biot reaching an altitude of 4,000 metres (13,000 ft) (1804)
  2. André-Jacques Garnerin making a parachute descent in his gondola (1797)
  3. Louis-Sébastien Lenormand making the first witnessed parachute descent (1783)
  4. A series of fantastic flying machines dreamed up during the 18th century
  5. Use of balloons for reconnaissance during the Battle of Mainz (1795)

  
  Bottom row:
  

  1. The coronation balloon of Napoleon I (1804)
  2. The death of Sophie Blanchard (1819)
  3. Francesco Zambeccari and two companions adrift in the Adriatic Sea (1804)
  4. The death of Thomas Harris (1824)
  5. Francesco Arban is rescued by Italian fishermen (1846)

  
  
• 

  Battle of Jerusalem (1917)

  Photo: American Colony; Restoration: Sebastian Kolendo

  The Mayor of Jerusalem Hussein al-Husayni (centre) meets with soldiers of the British Egyptian Expeditionary Force on December 9, 1917, under the white flag of surrender. The Battle of Jerusalem had begun the day before, but the Turkish forces in the city were no match against the British forces. A Turkish counterattack on December 25 was also repulsed, confirming the capture of Jerusalem by the Allies.
• 

  Charge of the Light Brigade

  Artist: William Simpson; Restoration: Adam Cuerden

  On October 25, 1854, during the Battle of Balaclava in the Crimean War, British cavalry units charged heavily fortified Russian opposition, an action known as the Charge of the Light Brigade. By mischance, they attacked the wrong target, as the orders were unclear, and as a result suffered great casualties. Alfred, Lord Tennyson's famous poem made the charge a symbol of warfare at both its most courageous and its most tragic.
• 

  Knight

  Illustration: Anton Sorg; Restoration: Lise Broer

  A knight, a member of the warrior class of the Middle Ages in Europe, in Gothic plate armour, from a German book illustration published 1483. The modern concept of the knight is as an elite warrior sworn to uphold the values of chivalry, faith, loyalty, courage and honour. Knighthood as known in Medieval Europe was characterized by the combination of two elements: feudalism and service as a mounted combatant. Both arose under the reign of the Holy Roman Emperor Charlemagne, from which the knighthood of the Middle Ages can be seen to have had its genesis.
• 

  Arecibo message

  Graphic: Arne Nordmann

  A color visual interpretation of the digital signal in the Arecibo message, sent in 1974 from the Arecibo Observatory. Broadcast into space via frequency modulated radio waves at a ceremony to mark the remodeling of the Arecibo radio telescope in Puerto Rico, the message consisted of 1,679 binary digits, approximately 210 bytes, transmitted at a frequency of 2,380 MHz. It was aimed at the Great Globular Cluster in Hercules, some 25,000 light-years away, and contains information related to mathematics, chemistry, and astronomy.
• 

  Warsaw Ghetto Uprising

  Photo credit: USHMM

  Jews captured by SS and SD troops during the suppression of the Warsaw Ghetto Uprising are forced to leave their shelter and march to the Umschlagplatz for deportation. The SD trooper pictured second from the right, is Josef Blösche, who was identified by Polish authorities using this photograph. Blösche was tried for war crimes in Erfurt, East Germany in 1969, sentenced to death and executed in July of that year.
• 

  Borobudur

  Photo: William Henry Jackson; Restoration: Lise Broer

  A man climbs a statue of a Buddhist idol at Borobudur, a 9th-century Mahayana Buddhist monument near Magelang, Central Java, Indonesia, in this 1895 hand-tinted lantern slide. The monument comprises six square platforms topped by three circular platforms, and is decorated with 2,672 relief panels and 504 Buddha statues. The monument is both a shrine to the Lord Buddha and a place for Buddhist pilgrimage. Evidence suggests Borobudur was abandoned following the 14th-century decline of Buddhist and Hindu kingdoms in Java, and the Javanese conversion to Islam. The monument is a UNESCO World Heritage Site and is the most popular tourist attraction in the country.
• 

  Alexander the Great

  Mosaic: Unknown

  Alexander the Great (356–323 BC), the King of Macedonia, as depicted in a detail from the Alexander Mosaic. Originally from the House of the Faun in Pompeii and dated to c. 100 BC, the mosaic depicts a battle between the armies of Alexander the Great and Darius III of Persia. It is believed to be a copy of an early 3rd century BC Hellenistic painting, probably by Philoxenos of Eretria. The whole mosaic measures 2.72 × 5.13 m (8 ft 11 in × 16 ft 9 in).
• 

  Great Sphinx of Giza

  Photo: Maison Bonfils; Restoration: Lise Broer

  A late nineteenth century photo of the partially excavated Great Sphinx of Giza, with the Pyramid of Khafre (left) and the Great Pyramid of Giza (right) behind it. The Sphinx is the oldest known monumental sculpture, and is commonly believed to have been built by ancient Egyptians of the Old Kingdom in the reign of the pharaoh Khafra.
• 

  History of the Australian Army

  Artist: Norman Lindsay

  "The Trumpet Calls", a recruitment poster for the Australian Army in World War I. When the United Kingdom declared war on Germany, Australia followed without hesitation. This was considered to be expected by the Australian public, because of the very large number of British-born citizens and first generation Anglo-Australians at the time. A total of 331,814 Australians were sent overseas to serve as part of the Australian Imperial Force with a casualty rate (killed or wounded) of 64%.

Did you know (auto generated)

• ... that Blackpool became the most successful club in the history of English Football League play-offs when they won the 2017 EFL League Two play-off Final against Exeter City?
• ... that the four-year history of radio station WUCI-FM included the revelation of the founder as a convicted felon and a station staffer threatening another with a revolver?
• ... that Group A of the 2006 FIFA World Cup featured the highest-scoring opening game in World Cup history since the competition began using a single match opening format?
• ... that the 1971 Hazelwood massacre was the largest mass murder in the history of "Murder City"?
• ... that Timo Meier became the first player in San Jose Sharks franchise history to score five goals in one game when he was 25?
• ... that British historian and South-Asian history expert David Washbrook called the UK Home Office out on its misrepresentation of slavery and British colonization?

Featured biography –

This is a Featured article, which represents some of the best content on English Wikipedia.

---

Fermi in 1943

Enrico Fermi (Italian: [enˈriːko ˈfermi]; 29 September 1901 – 28 November 1954) was an Italian and later naturalized American physicist and the creator of the world's first nuclear reactor, the Chicago Pile-1. He has been called the "architect of the nuclear age" and the "architect of the atomic bomb". He was one of very few physicists to excel in both theoretical physics and experimental physics. Fermi was awarded the 1938 Nobel Prize in Physics for his work on induced radioactivity by neutron bombardment and for the discovery of transuranium elements. With his colleagues, Fermi filed several patents related to the use of nuclear power, all of which were taken over by the US government. He made significant contributions to the development of statistical mechanics, quantum theory, and nuclear and particle physics.

Fermi's first major contribution involved the field of statistical mechanics. After Wolfgang Pauli formulated his exclusion principle in 1925, Fermi followed with a paper in which he applied the principle to an ideal gas, employing a statistical formulation now known as Fermi–Dirac statistics. Today, particles that obey the exclusion principle are called "fermions". Pauli later postulated the existence of an uncharged invisible particle emitted along with an electron during beta decay, to satisfy the law of conservation of energy. Fermi took up this idea, developing a model that incorporated the postulated particle, which he named the "neutrino". His theory, later referred to as Fermi's interaction and now called weak interaction, described one of the four fundamental interactions in nature. Through experiments inducing radioactivity with the recently discovered neutron, Fermi discovered that slow neutrons were more easily captured by atomic nuclei than fast ones, and he developed the Fermi age equation to describe this. After bombarding thorium and uranium with slow neutrons, he concluded that he had created new elements. Although he was awarded the Nobel Prize for this discovery, the new elements were later revealed to be nuclear fission products. (Full article...)

On this day

April 21: First day of Ridván (Baháʼí Faith, 2023)

Wignacourt Aqueduct

• 900 – A debt was pardoned by the chief of Tondo on the island of Luzon and recorded on the Laguna Copperplate Inscription, the earliest known calendar-dated document found in the Philippines.
• 1615 – The Wignacourt Aqueduct (pictured) in Malta was inaugurated and was used to carry water to Valletta for about 300 years.
• 1836 – Forces of the Republic of Texas led by Sam Houston defeated the Mexican troops of General Antonio López de Santa Anna in the Battle of San Jacinto, the decisive and final battle of the Texas Revolution.
• 1975 – South Vietnamese president Nguyễn Văn Thiệu resigned on hearing of the fall of Xuân Lộc, the last battle of the Vietnam War.
• 2021 – The Indonesian Navy submarine Nanggala sank with the loss of all 53 people on board.

• Pope Alexander II (d. 1073)
• Antonín Kammel (b. 1730)
• Cheryl Gillan (b. 1952)

More anniversaries:

• April 20
• April 21
• April 22

Selected quote

Our march to freedom is irreversible. We must not allow fear to stand in our way.

— Nelson Mandela, 1st South African President

Related portals

More Did you know...

• ... that on 26 April 1881 HMS Doterel (pictured) exploded, killing 143 of the 155 crew members?
• ... that causes of the deaths at the Berlin Wall included shooting, drowning, suffocation, suicide, and falling from a balloon?
• ... that the 19th-century swindler Bertha Heyman, known as "The Confidence Queen," conned men by pretending to be a wealthy woman who was unable to access her fortune?
• ... that only four great uncial codices have survived until the present day?
• ... that after World War II, Polish resistance organizer and Warsaw Uprising fighter Jan Mazurkiewicz was brutally tortured by the authorities in communist Poland?
• ... that tiny Paederus beetles may have caused some of the ten Plagues of Egypt?
• ... that the only known report of bloodshed during the simulated Nazi invasion of Winnipeg was from a woman who cut her thumb while preparing toast?
• ... that Dacian bracelets were used as currency and votive offerings?

Topics

Categories

Select [►] to view subcategories

History

History by ethnic group

History by location

History by mountain range

History by period

Fields of history

Historiography

People in history occupations

Chronology

Origins

Outlines of history and events

History-related lists

History awards

Historical controversies

History in culture

History education

Historical geography

Historical works

Historicity

Legacies

Historical objects

History organizations

Philosophy of history

Historic preservation

Pseudohistory

History images

History stubs

History • By period • By region • By topic • By ethnic group • Historiography • Archaeology • Books • Maps • Images • Magazines • Organizations • Fictional • Museums • Pseudohistory • Stubs • Timelines • Chronology • People • Wikipedia historians

WikiProjects

WikiProject History • Ancient Near East • Australian History • Classical Greece and Rome • Dacia • Former countries • History of Canada • Chinese history • European history • Heraldry and vexillology • Indian history • Jewish history • Medieval Scotland • Mesoamerica • Military history • Middle Ages • History of Science

WikiProject Time • Days of the Year • Years

WikiProject Biography • Composers • Political figures • Saints • United States Presidents

Things you can do

Here are some tasks awaiting attention: Article requests : Requested articles/Social sciences/History Copyedit : History articles needing copy editing Photo : Wikipedia requested photographs of history Stubs : Expand history stub articles Are you a historian : i.e. one who studies and writes history, and who has a keen interest in writing outstanding articles? Join our group by adding Category:Wikipedian historians to the bottom of your user page.

Associated Wikimedia

The following Wikimedia Foundation sister projects provide more on this subject:

• 
  Commons
  Free media repository
• 
  Wikibooks
  Free textbooks and manuals
• 
  Wikidata
  Free knowledge base
• 
  Wikinews
  Free-content news
• 
  Wikiquote
  Collection of quotations
• 
  Wikisource
  Free-content library
• 
  Wikiversity
  Free learning tools
• 
  Wiktionary
  Dictionary and thesaurus

Discover Wikipedia using portals

• 
  List of all portals
• 
  The arts portal
• 
  Biography portal
• 
  Current events portal
• 
  Geography portal
• 
  History portal
• 
  Mathematics portal
• 
  Science portal
• 
  Society portal
• 
  Technology portal
• 
  Random portal
• 
  WikiProject Portals