May 11 in History

Constantine I (27 February 272 – 22 May 337), also known as Constantine the Great, was Roman emperor from AD 306 to 337 and the first Roman emperor to convert to Christianity. He played a pivotal role in elevating the status of Christianity in the Roman Empire, the Edict of Milan decriminalising Christian practice and ceasing Christian persecution. This was a turning point in the Christianisation of the Roman Empire. He founded the city of Constantinople (now Istanbul) and made it the capital of the Empire, which it remained for over a millennium. Born in Naissus, a city located in the province of Moesia Superior (now Niš, Serbia), Constantine was the son of Flavius Constantius, a Roman army officer from Moesia Superior, who would become one of the four emperors of the Tetrarchy. His mother, Helena, was a Greek woman of low birth, probably from Bithynia. Later canonised as a saint, she is credited for the conversion of her son in some traditions, though others believe that Constantine converted her. He served with distinction under emperors Diocletian and Galerius. He began his career by campaigning in the eastern provinces against the Persians, before being recalled to the west in AD 305 to fight with his father in the province of Britannia. After his father's death in 306, Constantine was proclaimed as augustus (emperor) by his army at Eboracum (York, England). He eventually emerged victorious in the civil wars of the Tetrarchy against the emperors Maxentius and Licinius to become the sole ruler of the Roman Empire by 324. Upon his accession, Constantine enacted many reforms to strengthen the empire. He restructured the government, separating civil and military authorities. To combat inflation, he introduced the solidus, a new gold coin that became the standard for Byzantine and European currencies for more than a thousand years. He disbanded the Praetorian Guard, which had supported Maxentius. The Roman army was reorganised to consist of mobile units (comitatenses), often around the emperor, to serve on campaigns against external enemies or Roman rebels, and frontier-garrison troops (limitanei) who could counter barbarian raids but were less and less effective against full-scale barbarian invasions. Constantine pursued campaigns against the tribes on the Roman frontiers—such as the Franks, the Alemanni, the Goths, and the Sarmatians—and resettled territories abandoned by his predecessors during the Crisis of the Third Century with citizens of Roman society. Although Constantine lived much of his life as a pagan, he later became a catechumen, as he began to favour Christianity in 312, finally being baptised by Eusebius of Nicomedia, an Arian bishop. He played an influential role in the proclamation of the Edict of Milan in 313, which legalised Christianity in the Roman Empire. He convoked the First Council of Nicaea in 325, which produced the Christian statement of belief known as the Nicene Creed. On his orders, the Church of the Holy Sepulchre was built at the site claimed to be the tomb of Jesus in Jerusalem and was deemed the holiest place in Christendom. He has historically been referred to as the "First Christian Emperor" but while he did favour the Christian Church, some modern scholars debate his beliefs and even his comprehension of Christianity. He is venerated as a saint in Eastern Christianity and parts of Western Christianity, and he did much to push Christianity towards the mainstream of Roman culture. The age of Constantine marked a distinct epoch in the history of the Roman Empire and a pivotal moment in the evolution from classical antiquity to the Middle Ages. He built a new imperial residence in the city of Byzantium, which was officially renamed New Rome, while also taking on the name Constantinople in his honour. It subsequently served as the capital of the empire for more than a thousand years—with the Eastern Roman Empire for most of that period commonly referred to retrospectively as the Byzantine Empire in English. In leaving the empire to his sons and other members of the Constantinian dynasty, Constantine's immediate political legacy was the replacement of Diocletian's Tetrarchy with the principle of dynastic succession. His memory was held in high regard during the lifetime of his children and for centuries after his reign. The medieval church held him up as a paragon of virtue, while secular rulers invoked him as a symbol of imperial legitimacy. The rediscovery of anti-Constantinian sources in the early Renaissance engendered more critical appraisals of his reign, with modern and contemporary scholarship often seeking to balance the extremes of earlier accounts.

The Diamond Sūtra is a Mahāyāna Buddhist sutra from the genre of Prajñāpāramitā sutras. Translated into a variety of languages over a broad geographic range, the Diamond Sūtra is one of the most influential Mahayana sutras in East Asia, and it is particularly prominent within the Chan tradition, along with the Heart Sutra.

Edgar (or Eadgar; c. 944 – 8 July 975), also known as Edgar the Peaceful, the Peacemaker and the Peaceable, was King of the English from 959 until his death in 975. He became king of all England on his brother Eadwig's death. He was the younger son of King Edmund I and his first wife, Ælfgifu. A detailed account of Edgar's reign is not possible, because only a few events were recorded by chroniclers and monastic writers, who were more interested in recording the activities of the leaders of the church. Edgar mainly followed the political policies of his predecessors, but there were major changes in the religious sphere. The English Benedictine Reform, which he strongly supported, became a dominant religious and social force. It is seen by historians as a major achievement, and it was accompanied by a literary and artistic flowering, mainly associated with Æthelwold, Bishop of Winchester. Monasteries aggressively acquired estates from lay landowners with Edgar's assistance, leading to disorder when he died and former owners sought to recover their lost property, sometimes by force. Edgar's major administrative reform was the introduction of a standardised coinage in the early 970s to replace the previous decentralised system. He also issued legislative codes which mainly concentrated on improving procedures for enforcement of the law. England had suffered from Viking invasions for over a century when Edgar came to power, but there were none during his reign, which fell in a lull in attacks between the mid-950s and the early 980s. After his death the throne was disputed between the supporters of his two surviving sons; the elder one, Edward the Martyr, was chosen with the support of Dunstan, the Archbishop of Canterbury. Three years later Edward was murdered; he was succeeded by his younger half-brother, Æthelred the Unready. Later chroniclers presented Edgar's reign as a golden age when England was free from external attacks and internal disorder, especially compared with Æthelred's disastrous rule. Modern historians see Edgar's reign as the pinnacle of Anglo-Saxon culture, but they disagree about his political legacy, and some see the disorders following his death as a natural reaction to his overbearing control.

Matilda of Flanders was the daughter of Baldwin V, the Count of Flanders. She became Duchess of Normandy by marriage to William the Conqueror, and regent of Normandy during his absences from the duchy, when William was on campaign in England. Two years after William conquered England she was crowned Queen of England. She was the mother of at least nine children who survived to adulthood, including two kings of England, William II and Henry I.

Louis IX, also known as Saint Louis, was King of France from 1226 until his death in 1270. He is widely recognized as the most distinguished of the Direct Capetians, is the sole king of France to be canonised as a saint of the Catholic Church, and is also the direct ancestor of all subsequent French kings. Following the death of his father, Louis VIII, he was crowned in Reims at the age of 12. His mother, Blanche of Castile, effectively ruled the kingdom as regent until he came of age, and continued to serve as his trusted adviser until her death.

The Ottoman Navy or the Imperial Navy, also known as the Ottoman Fleet, was the naval warfare arm of the Ottoman Empire. It was established after the Ottomans first reached the sea in 1323 by capturing Praenetos, the site of the first Ottoman naval shipyard and the nucleus of the future navy.

In the Great Northern War (1700–1721) a coalition led by Russia successfully contested the supremacy of Sweden in Northern, Central and Eastern Europe. The initial leaders of the anti-Swedish alliance were Peter I of Russia, Frederick IV of Denmark–Norway and Augustus II the Strong of Saxony-Poland-Lithuania. Frederick IV and Augustus II were defeated by Sweden, under Charles XII, and forced out of the alliance in 1700 and 1706, respectively, but rejoined it in 1709 after the defeat of Charles XII at the Battle of Poltava. George I of Great Britain and the Electorate of Hanover joined the coalition in 1714 for Hanover and in 1717 for Britain, and Frederick William I of Brandenburg-Prussia joined it in 1715. Charles XII led the Swedish Army. Swedish allies included Holstein-Gottorp, several Polish magnates under Stanisław I Leszczyński (1704–1710) and Cossacks under the Ukrainian Hetman Ivan Mazepa (1708–1710). The Ottoman Empire temporarily hosted Charles XII of Sweden and intervened against Peter I. The war began when Denmark–Norway, Saxony and Russia, sensing an opportunity as Sweden was ruled by the young Charles XII, formed a coalition against Sweden. Denmark invaded Sweden's ally Holstein-Gottorp, while Saxony and Russia declared war on the Swedish Empire and attacked Swedish Livonia and Swedish Ingria, respectively. Sweden parried the Danes at Travendal (August 1700) and the Russians at Narva (November 1700), and in a counter-offensive pushed Augustus II's forces through the Polish–Lithuanian Commonwealth to Saxony, dethroning Augustus on the way (September 1706) and forcing him to acknowledge defeat in the Treaty of Altranstädt (October 1706). The treaty also secured the extradition and execution of Johann Reinhold Patkul, architect of the alliance seven years earlier. Meanwhile, the forces of Peter I had recovered from defeat at Narva and gained ground in Sweden's Baltic provinces, where they cemented Russian access to the Baltic Sea by founding Saint Petersburg in 1703. Charles XII moved from Saxony into Russia to confront Peter, but the campaign ended in 1709 with the destruction of the main Swedish army at the decisive Battle of Poltava (in present-day Ukraine) and Charles' exile in the Ottoman town of Bender. The Ottoman Empire defeated the Russian–Moldavian army in the Pruth River Campaign, but that peace treaty was in the end without great consequence to Russia's position. After Poltava, the anti-Swedish coalition revived and subsequently Hanover and Prussia joined it. The remaining Swedish forces in plague-stricken areas south and east of the Baltic Sea were evicted, with the last city, Tallinn, falling in the autumn of 1710. By 1714, Russia had occupied Finland. On 18 October 1709, Sweden received Denmark-Norway’s declaration of war, presented as a response to the alleged maltreatment of Danes by Sweden in Scania. Swedish victory at Helsingborg amounted to only a brief respite before ultimate defeat in the west. From June 1716, Denmark and Russia prepared a joint invasion of Sweden proper, which the Tsar envisioned as dealing the Swedish king a decisive blow. Earlier that year, Charles XII had invaded south-eastern Norway, but a string of successive defeats, together with the systematic disruption of Swedish logistics by the Norwegians, had forced him back towards the border. In June and July, a renewed offensive against Fredrikshald, or Halden, was frustrated by the combined efforts of the town's garrison and inhabitants. The campaign was finally abandoned after Tordenskjold, the Norwegian naval hero, captured almost the entire Swedish supply and transport fleet at Dynekilen, forcing Charles XII to finally retreat across the border. In the meantime, a Danish-Russian invasion force was assembling across the strait. Severe delays, however, pushed the operation into autumn and, together with growing distrust and strategic divergence between the allied monarchs, ultimately led to its cancellation. In 1718, Sweden launched a second and even larger campaign against Norway. Charles XII was ultimately killed in the trenches before Fredriksten, while a second Swedish field army was forced onto the Carolean Death March during its retreat from Trøndelag, losing most of its men. The failure of the Norwegian campaign constituted a severe strategic defeat for Sweden and effectively brought its offensive war to an end. The war ended with the defeat of Sweden, leaving Russia as the new dominant power in the Baltic region and as a new major force in European politics. The Western powers, Great Britain and France, became caught up in the separate War of the Spanish Succession (1701–1714), which broke out over the Bourbon Philip of Anjou's succession to the Spanish throne and a possible joining of France and Spain. The formal conclusion of the Great Northern War came with the Swedish-Hanoverian and Swedish-Prussian Treaties of Stockholm (1719), the Dano-Swedish Treaty of Frederiksborg (1720), and the Russo-Swedish Treaty of Nystad (1721). By these treaties Sweden ceded its exemption from the Sound Dues and lost the Baltic provinces and the southern part of Swedish Pomerania. The peace treaties also ended its alliance with Holstein-Gottorp. Hanover gained Bremen-Verden, Brandenburg-Prussia incorporated the Oder estuary (Stettin Lagoons), Russia secured the Baltic Provinces, and Denmark strengthened its position in Schleswig-Holstein. In Sweden, the absolute monarchy had come to an end with the death of Charles XII, and Sweden's Age of Liberty began.

Spencer Perceval (1 November 1762 – 11 May 1812) was Prime Minister of the United Kingdom from October 1809 until his assassination in May 1812. He is the only British prime minister to have been assassinated, and the only solicitor-general or attorney-general to have become prime minister. The younger son of The Earl of Egmont, an Anglo-Irish earl, Perceval was educated at Harrow School and Trinity College, Cambridge. He studied law at Lincoln's Inn, practised as a barrister on the Midland circuit, and in 1796 became a King's Counsel. He entered politics at age 33 as a member of Parliament (MP) for Northampton. A follower of William Pitt the Younger, Perceval always described himself as a "friend of Mr. Pitt", rather than a Tory. He was opposed to Catholic emancipation and reform of Parliament; he supported the war against Napoleon and the abolition of the Atlantic slave trade. After a late entry into politics, his rise to power was rapid; he was appointed as Solicitor General and then Attorney General for England and Wales in the Addington ministry, Chancellor of the Exchequer and Leader of the House of Commons in the second Portland ministry, and then became prime minister in 1809. At the head of a weak government, Perceval faced a number of crises during his term in office, including an inquiry into the Walcheren expedition, the mental illness and incapacity of King George III, economic depression, and Luddite riots. He overcame those crises, successfully pursued the Peninsular War in the face of opposition defeatism, and won the support of the Prince Regent. His position was stronger by early 1812, when in the lobby of the House of Commons, he was assassinated by John Bellingham, a merchant with a grievance against his government. Bellingham was hanged one week later. Perceval had four older brothers who survived to adulthood. Through expiry of their male-line, male heirs, the earldom of Egmont passed to one of his great-grandsons in the early 20th century and became extinct in 2011.

William Lawson, MLC (2 June 1774 – 16 June 1850) was a British soldier, explorer, land owner, grazier and politician. In 1800, he migrated to Sydney, New South Wales, and from 1819, he served as the commandant of the Bathurst, New South Wales region, and from 1843, he served as a member of the New South Wales Parliament. In 1813, Lawson pioneered the first successful crossing of the Blue Mountains by British colonists, along with Gregory Blaxland and William Wentworth, and they discovered inland pastures that fuelled the colony's economic growth thereafter.

The Indian Rebellion of 1857 was a major uprising in India in 1857–58 against the rule of the British East India Company, which functioned as a sovereign power, including military forces, on behalf of the British Crown. The rebellion began on 10 May 1857 as a mutiny of sepoys of the company's garrison in Meerut, a town 40 miles (64 km) northeast of Delhi. It then erupted into other mutinies and civilian rebellions, chiefly in the upper Gangetic plain and central India, though incidents of revolt also occurred farther north and east. The rebellion posed a military threat to British power in that region, and was contained only with the rebels' defeat in Gwalior on 20 June 1858. On 1 November 1858, the British granted amnesty to all rebels not involved in murder, though they did not declare the hostilities to have formally ended until 8 July 1859. The name of the revolt is contested, and it is variously described as the Sepoy Mutiny, the Indian Mutiny, the Great Rebellion, the Revolt of 1857, the Indian Insurrection, and the First War of Independence. The Indian rebellion was fed by resentments born of diverse perceptions, including invasive British-style social reforms, harsh land taxes, summary treatment of some rich landowners and princes, and scepticism about British claims that their rule offered material improvement to the Indian economy. Many Indians rose against the British; however, many also fought for the British, and the majority remained seemingly compliant to British rule. Violence, which sometimes betrayed exceptional cruelty, was inflicted on both sides: on British officers and civilians, including women and children, by the rebels, and on the rebels and their supporters, including sometimes entire villages, by British reprisals; the cities of Delhi and Lucknow were laid waste in the fighting and the British retaliation. After the outbreak of the mutiny in Meerut, the rebels quickly reached Delhi, whose 81-year-old Mughal ruler, Bahadur Shah Zafar, was declared the Emperor of Hindustan. Soon, the rebels had captured large tracts of the North-Western Provinces and Awadh (Oudh). The East India Company's response came rapidly as well. With help from reinforcements, Kanpur was retaken by mid-July 1857, and Delhi by the end of September. However, it then took the remainder of 1857 and the better part of 1858 for the rebellion to be suppressed in Jhansi, Lucknow, and especially the Awadh countryside. Other regions of Company-controlled India— the Bengal Presidency, the Bombay Presidency, and the Madras Presidency—remained largely calm. In the Punjab, the Sikh princes crucially helped the British by providing both soldiers and support. The large princely states, Hyderabad, Mysore, Travancore, and Kashmir, as well as the smaller ones of Rajputana, did not join the rebellion, serving the British, in Governor-General Lord Canning's words, as "breakwaters in a storm". In some regions, most notably in Awadh, the rebellion took on the attributes of a patriotic revolt against British oppression. However, the rebel leaders proclaimed no articles of faith that presaged a new political system. Even so, the rebellion proved to be an important watershed in Indian and British Empire history. It led to the dissolution of the East India Company and forced the British to reorganize the army, the financial system, and the administration in India through passage of the Government of India Act 1858. India was thereafter administered directly by the British government in the new British Raj. On 1 November 1858, Queen Victoria issued a proclamation to Indians, which, while lacking the authority of a constitutional provision, promised rights similar to those of other British subjects. In the following decades, when admission to these rights was not always forthcoming, Indians were to pointedly refer to the Queen's proclamation in growing avowals of a new nationalism.

Minnesota is a state in the Upper Midwestern region of the United States. It is bordered by the Canadian provinces of Manitoba and Ontario to the north and east and by the U.S. states of Wisconsin to the east, Iowa to the south, and North Dakota and South Dakota to the west. The northeast corner has a water boundary with Michigan across Lake Superior. It is the 12th-largest U.S. state in area and the 22nd-most populous, with about 5.8 million residents. Minnesota is known as the "Land of 10,000 Lakes"; it has 14,420 bodies of fresh water covering at least ten acres each. Roughly a third of the state is forested. Much of the remainder is prairie and farmland. More than 60% of Minnesotans (about 3.71 million) live in the Minneapolis–Saint Paul metropolitan area, known as the "Twin Cities", which is Minnesota's main political, economic, and cultural hub and the 16th-largest metropolitan area in the U.S. Other minor metropolitan and micropolitan statistical areas include Duluth, Mankato, Moorhead, Rochester, and St. Cloud. Minnesota, which derives its name from the Dakota language, has been inhabited by various Native Americans since the Woodland period of the 11th century BCE. Between roughly 200 and 500 CE, two areas of the indigenous Hopewell tradition emerged: the Laurel complex in the north, and Trempealeau Hopewell in the Mississippi River Valley in the south. The Upper Mississippian culture, consisting of the Oneota people and other Siouan speakers, emerged around 1000 CE and lasted through the arrival of Europeans in the 17th century. French explorers and missionaries were the earliest Europeans to enter the region, encountering the Dakota, Ojibwe, and various Anishinaabe tribes. Much of what is now Minnesota formed part of the vast French holding of Louisiana, which the United States purchased in 1803. After several territorial reorganizations, the Minnesota Territory was admitted to the Union as the 32nd state in 1858. Minnesota's official motto, L'Étoile du Nord ("The Star of the North"), is the only state motto in French. This phrase was adopted shortly after statehood and reflects both the state's early French explorers and its position as the northernmost state in the contiguous U.S. As part of the American frontier, Minnesota attracted settlers and homesteaders from across the country. Its growth was initially based on timber, agriculture, and railroad construction. Into the early 20th century, European immigrants arrived in significant numbers, particularly from Scandinavia, Germany, and Central Europe. Many were linked to the failed revolutions of 1848, which partly influenced the state's development as a center of labor and social activism. Minnesota's rapid industrialization and urbanization precipitated major social, economic, and political changes in the late 19th and early 20th centuries; the state was at the forefront of labor rights, women's suffrage, and political reform. Consequently, Minnesota is relatively unique among Midwestern states in being a reliable base for the Democratic Party, having voted for every Democratic presidential nominee since 1976, longer than any other U.S. state. Since the late 20th century, Minnesota's economy has diversified away from traditional industries such as agriculture and resource extraction to services, finance, and health care. Minnesota ranks highly among national averages in terms of life expectancy, healthcare standards, and education, and above average in income per capita. Minnesota is home to 11 federally recognized Native American reservations (seven Ojibwe, four Dakota), and its culture, demographics, and religious landscape reflect Scandinavian and German influence. This heritage continues to affect the state's racial demographics, making it one of the country's least diverse states, but in recent decades, Minnesota has become more multicultural, due to both larger domestic migration and immigration from Latin America, Asia, the Horn of Africa, and the Middle East. The state has the nation's largest population of Somali Americans and the second-largest Hmong community.

The Hödel assassination attempt, or the assassination attempt on Wilhelm I of 11 May 1878, was an armed attack carried out by Max Hödel, a young German anarchist, against the Kaiser, Wilhelm I. Along with the Nobiling assassination attempt, less than a month later and aimed at the same target, it was one of the first acts of propaganda by the deed in history. The anarchist movement, founded shortly before, faced significant repression in Western Europe. This pushed anarchists to develop new strategies, such as propaganda by the deed, aiming to transmit their ideas through actions rather than through writings or speeches. In parallel with these developments, Max Hödel, a poor young man initially in the Social Democratic Party, came into contact with several anarchists and became increasingly in agreement with their positions. In April 1878, Hödel moved from Leipzig to Berlin, armed himself, and prepared to carry out his attack. On 11 May, he managed to target the Kaiser during one of his usual public appearances, fired at him three times, and missed, despite the fact that he was apparently a good marksman. Arrested and beaten, he was quickly tried and sentenced to death, without this appearing to bother him excessively. After his death sentence, he refused to appeal, closed his last letter with 'Long live the Commune!' and was then executed. Hödel's attempt and trajectory lead to historiographical debates. While some historians maintain that it was an attack carried out by an isolated young man with little knowledge of the subtleties of anarchist thought, more recent historians challenge this reading and present, on the contrary, an attempt likely thought out and organized by the Anti-authoritarian International. According to these more recent readings, Hödel was fully anarchist and sought to avoid repression of the anarchist movement by presenting himself differently during the judicial proceedings.

The Mussel Slough Tragedy was a shootout over disputed land titles between settlers and the Southern Pacific Railroad (SP). It took place on May 11, 1880, on a farm located 5.6 miles (9 km) northwest of Hanford, California, in the central San Joaquin Valley. Seven people were killed. The episode became a major theme in many protests and publications denouncing the railroads as villains in California history. The exact history of the incident has been the source of some disagreement, largely because popular anti-railroad sentiment in the 1880s interpreted the incident as a clear example of corrupt and cold-blooded corporate greed. Muckraking journalists and anti-railroad activists glorified the settlers and used the events as evidence and justification for their anti-corporate crusades. Frank Norris' 1901 novel The Octopus: A Story of California was inspired by this incident, as was W. C. Morrow's 1882 novel Blood-Money. May Merrill Miller's novel First the Blade includes a fictionalized account of the conflict. The site of the episode is now registered as California Historical Landmark #245. A historical marker on the east side of 14th Avenue, 350 yards (320 m) north of Elder Avenue, memorializes the site.

The Wham Paymaster robbery ( WHAHM) was an armed robbery of a United States Army paymaster and his escort on May 11, 1889, in the Arizona Territory. Major Joseph W. Wham was transporting a payroll consisting of more than US$28,000 (equivalent to $1,003,330 in 2025) in gold and silver coins from Fort Grant to Fort Thomas when he and his escort of eleven Buffalo Soldiers were ambushed. During the attack, the bandits wounded eight of the soldiers, forced them to retreat to cover, and stole the payroll. As a result of their actions under fire, Sergeant Benjamin Brown and Corporal Isaiah Mays were awarded the Medal of Honor while eight other soldiers received a Certificate of Merit. Eleven men, most from the nearby Mormon community of Pima, were arrested, with eight of them ultimately tried on charges of robbery. All of the accused were acquitted, and the stolen money was never recovered.

The Pullman Strike comprised two interrelated strikes in 1894 that shaped national labor policy in the United States during a period of deep economic depression. First came a strike by the American Railway Union (ARU) against the Pullman Company's factory in Chicago in spring 1894. When it failed, the ARU launched a national boycott against all trains that carried Pullman passenger cars. The nationwide railroad boycott that lasted from May 11 to July 20, 1894, was a turning point for US labor law. It pitted the American Railway Union (ARU) against the Pullman Company, the main railroads, the main labor unions, and the federal government of the United States under President Grover Cleveland. The strike and boycott shut down much of the nation's freight and passenger traffic west of Detroit, Michigan. The conflict began in Chicago, on May 11 when nearly 4,000 factory employees of the Pullman Company began a wildcat strike in response to recent reductions in wages. Most of the factory workers who built Pullman cars lived in the "company town" of Pullman just outside of Chicago. Pullman was designed as a model community by its namesake founder and owner George Pullman. Jennie Curtis, who lived in Pullman and was president of seamstress union ARU LOCAL 269, gave a speech at the ARU convention urging people to strike. As the Panic of 1893 weakened much of the economy, railroad companies ceased purchasing new passenger cars made by Pullman. The company laid off workers and reduced the wages of retained workers. Among the reasons for the strike were the absence of democracy within the town of Pullman and its politics, the rigid paternalistic control of the workers by the company, excessive water and gas rates, and a refusal by the company to allow workers to buy and own houses. They had not yet formed a union. Founded in 1893 by Eugene V. Debs, the ARU was an organization of railroad workers. Debs brought in ARU organizers to Pullman and signed up many of the disgruntled factory workers. When the Pullman Company refused recognition of the ARU or any negotiations, ARU called a strike against the factory, but it showed no sign of success. To win the strike, Debs decided to stop the movement of Pullman cars on railroads. The over-the-rail Pullman employees (such as conductors and porters) did not go on strike. Debs and the ARU called a massive boycott against all trains that carried a Pullman car. It affected most rail lines west of Detroit and at its peak involved some 250,000 workers in 27 states. The American Federation of Labor (AFL) opposed the boycott because the ARU was trying to take its membership. The high prestige railroad brotherhoods of Conductors and Engineers were opposed to the boycott. The Fireman brotherhood—of which Debs had been a prominent leader—was split. The General Managers' Association of the railroads coordinated the opposition. Thirty people were killed in riots in Chicago alone. Historian David Ray Papke, building on the work of Almont Lindsey published in 1942, estimated that another 40 were killed in other states. Property damage exceeded $80 million. The federal government obtained an injunction against the union, Debs, and other boycott leaders, ordering them to stop interfering with trains that carried mail cars. After the strikers refused, Grover Cleveland ordered in the Army to stop the strikers from obstructing the trains. Violence broke out in many cities, and the strike collapsed. Defended by a team including Clarence Darrow, Debs was convicted of violating a court order and sentenced to prison; the ARU then dissolved.

Uruguay, officially the Oriental Republic of Uruguay, is a country in southeastern South America. It shares borders with Argentina to its west and southwest and Brazil to its north and northeast, while bordering the Río de la Plata to the south and the Atlantic Ocean to the southeast. It is part of the Southern Cone region of South America. Uruguay covers an area of approximately 176,215 square kilometers (68,037 sq mi). It has a population of almost 3.5 million people, of whom nearly 2 million live in the metropolitan area of its capital and largest city, Montevideo.

A deadly series of at least 33 tornadoes hit at least 10 different U.S. states on May 9–11, 1953. Tornadoes appeared daily from Minnesota in the north to Texas in the south. The strongest and deadliest tornado was a powerful F5 tornado that struck Waco, Texas on May 11, causing 114 of the 144 deaths in the outbreak. Alongside the 1902 Goliad tornado, it was the deadliest tornado in Texas history and is the 11th deadliest tornado in U.S. history. The tornado's winds demolished more than 600 houses, 1,000 other structures, and over 2,000 vehicles. 597 injuries occurred, and many survivors had to wait more than 14 hours for rescue. The destruction dispelled a myth that the geography of the region spared Waco from tornadoes, and along with other deadly tornadoes in 1953, the Waco disaster was a catalyst for advances in understanding the link between tornadoes and radar-detected hook echoes. It also generated support for improved civil defense systems, the formation of weather radar networks, and improved communications between stakeholders such as meteorologists, local officials, and the public. The Waco tornado was not the only deadly and damaging tornado in the outbreak sequence. On the same day as the Waco disaster, a high-end F4 tornado struck the Texas city of San Angelo, causing catastrophic damage, killing 13 people, and injuring more than 150. The tornado swept away numerous homes and damaged a school, but students inside escaped without serious injuries. On May 9, a long-tracked F3 tornado destroyed a large swath of Hebron, Nebraska and killed five people in the area. The following day, May 10, featured numerous, often long-tracked and intense tornado families across the states of Iowa, Minnesota, and Wisconsin. Two families on nearly parallel paths traveled more than 100 miles (160 km) each and killed a combined total of six people, mostly in Wisconsin. At least one of the tornado families reached F4 intensity in Wisconsin. Two other F4 tornadoes also struck Iowa. Additionally, a relatively moderate tornado of F2 intensity caused significant loss of life in a shack in Minnesota, killing six people. Although 33 tornadoes were officially registered from May 9–11, others likely occurred but either went undetected or were not officially documented.

During the evening hours of May 11, 1970, an extremely violent multiple-vortex tornado struck a large portion of the city of Lubbock, located in the state of Texas, United States. The incident resulted in 26 fatalities and an estimated $250 million in damage (equivalent to $2.07 billion in 2025). Known as the Lubbock tornado, it was in its time the costliest tornado in U.S. history, damaging nearly 9,000 homes and inflicting widespread damage to businesses, high-rise buildings, and public infrastructure. The tornado's damage was surveyed by meteorologist Ted Fujita in what researcher Thomas P. Grazulis described as "the most detailed mapping ever done, up to that time, of the path of a single tornado." Originally, the most severe damage was assigned a preliminary F6 rating on the Fujita scale, making it one of only two tornadoes to receive the rating, alongside the 1974 Xenia tornado. Later, it was downgraded to an F5 rating. The extremity of the damage and the force required to displace heavy objects as much as was observed indicated that winds produced by vortices within the tornado may have exceeded 290 mph (470 km/h). Although skies were clear, dry, and sunny in Lubbock during the afternoon of May 11, the westward push of a dry line brought moist air into West Texas, providing suitable conditions for thunderstorm development. After 6:30 p.m., thunderstorms were in progress over the Lubbock area. At least two tornadoes developed prior to the main F5 tornado, including one that tracked across parts of eastern Lubbock near U.S. 87. The primary F5 tornado touched down in southwestern Lubbock at 9:35.00 p.m. and over the next half-hour carved a 8.5-mile (13.7 km) path of devastation encompassing roughly a quarter of the city, with the twister lifting near the Lubbock Municipal Airport shortly after 10 p.m. The tornado varied in size, spanning 1.5 mi (2.4 km) across when it first touched down before narrowing to around 0.25 mi (0.40 km) by the time it lifted. Severe damage was wrought to high-rises and other buildings in downtown Lubbock, including the 20-story Great Plains Life Building. The tornado briefly moved west and weakened, causing light damage to the campus of Texas Tech University before reintensifying and resuming a northward path. The tornado's most destructive impacts were observed in the Guadalupe barrio, north of 4th Street, along Texas State Highway Loop 289, and near the Lubbock County Club. In those locales, some homes were completely leveled and many others were irreparably damaged. Around 119 aircraft were damaged at the Lubbock airport where the Lubbock office of the United States Weather Bureau was located. As of 2026, this remains the westernmost F5/EF5 tornado recorded in the United States.

The Pentagon Papers, officially titled Report of the Office of the Secretary of Defense Vietnam Task Force, is a United States Department of Defense history of the United States' political and military involvement in Vietnam from 1945 to 1968. Released by Daniel Ellsberg, who had worked on the study, it was made public on the front page of The New York Times starting on June 13, 1971. When U.S. Attorney General John N. Mitchell sought an injunction to stop the Times from publishing further material, Ellsberg forwarded a copy he made to The Washington Post, which started publishing them on June 18, 1971. A 1996 article in The New York Times said that the Pentagon Papers had demonstrated, among other things, that Lyndon B. Johnson's administration had "systematically lied, not only to the public but also to Congress".

Aeroflot Flight 6551 (Russian: Рейс 6551 Аэрофлота Reys 6551 Aeroflota) was a scheduled domestic passenger flight on an Ilyushin Il-18B from Baku to Novosibirsk with a stopover in Tashkent that crashed on 11 May 1973 over Semipalatinsk in the Kazakh SSR, killing all 63 people aboard.

Niklaus Barbie was a German officer of the Schutzstaffel and Sicherheitsdienst who worked in Vichy France during World War II. He became known as the "Butcher of Lyon" for having personally tortured prisoners—primarily Jews and members of the French Resistance—as the head of the Gestapo in Lyon.

ValuJet Flight 592 was a regularly scheduled flight from Miami to Atlanta in the United States. On May 11, 1996, the McDonnell Douglas DC-9 operating the route crashed into the Florida Everglades about 10 minutes after departing Miami due to a fire in the cargo compartment. The fire was caused by mislabeled and improperly stored chemical oxygen generators. All 110 people on board were killed. ValuJet, a low-cost carrier, already had a poor safety record before the crash, and the incident brought widespread attention to the airline's problems. Its fleet was grounded for several months after the crash. When operations resumed, the airline was unable to attract as many customers as it had before the deadly crash. The airline acquired AirTran Airways in 1997 but the lingering damage to the ValuJet brand led its executives to assume the AirTran name. It is the deadliest aviation accident in Florida history as of 2026.

Deep Blue was a customized IBM RS/6000 SP supercomputer for chess-playing designed by computer scientist Feng-hsiung Hsu. It was the first computer to win a game, and the first to win a match, against a reigning world champion under regular time controls. Development began in 1985 at Carnegie Mellon University under the name ChipTest. It then moved to IBM, where it was first renamed Deep Thought, then again in 1989 to Deep Blue. In 1996, it was used to compete against world champion Garry Kasparov in a six-game match, where it won one, drew two, and lost three games. In 1997, it underwent an upgrade, and in a six-game rematch it defeated Kasparov by winning two games and drawing three. Deep Blue's victory is considered a milestone in the history of artificial intelligence and has been the subject of several books and films.

Pokhran-II (Operation Shakti) was a series of five nuclear weapon tests conducted by India in May 1998. The bombs were detonated at the Indian Army's Pokhran Test Range in Rajasthan. It was the second instance of nuclear testing conducted by India, after the first test, Smiling Buddha, in May 1974. The test consisted of five detonations, the first of which was claimed to be a two-stage fusion bomb while the remaining four were fission bombs. The first three tests were carried out simultaneously on 11 May 1998 and the last two were detonated two days later on 13 May 1998. The tests were collectively called Operation Shakti, and the five nuclear bombs were designated as Shakti-I to Shakti-V. The chairman of the Atomic Energy Commission of India described each of the explosions to be equivalent to several tests carried out over the years by various nations. While announcing the tests, the Indian government declared India as a nuclear state and that the tests achieved the main objective of giving the capability to build fission bombs and thermonuclear weapons with yields up to 200 kilotons. While the Indian fission bombs have been documented, the design and development of thermonuclear weapons remains uncertain after the tests. As a consequence of the tests, United Nations Security Council Resolution 1172 was enacted and economic sanctions were imposed by countries including Japan and the United States.

The Second Chechen War took place in Chechnya and the border regions of the North Caucasus between the Russian Federation and the breakaway Chechen Republic of Ichkeria, from August 1999 to April 2009.

Iraq, officially the Republic of Iraq, is a country in West Asia. Located within the Middle East, it is bordered by Saudi Arabia to the south, Turkey to the north, Iran to the east, the Persian Gulf and Kuwait to the southeast, Jordan to the southwest, and Syria to the west. The country covers an area of 438,317 square kilometres (169,235 sq mi) and has a population of over 46 million, making it the 58th largest country by area and the 31st most populous in the world. Baghdad, home to over 8 million people, is the capital city and the largest in the country.

Space Shuttle Atlantis is a retired Space Shuttle orbiter vehicle which belongs to NASA, the spaceflight and space exploration agency of the United States. Atlantis was manufactured by the Rockwell International company in Southern California and was delivered to the Kennedy Space Center in Eastern Florida in April 1985. Atlantis is the fourth operational and the second-to-last Space Shuttle built. Its maiden flight was STS-51-J made from October 3 to 7, 1985. It was, along with Challenger, one of only two orbiters equipped to carry the Shuttle-Centaur booster.

The 2011 Lorca earthquake (Spanish: Terremoto de Lorca de 2011) was a moderate 5.1 Mw earthquake that occurred 18:47 CEST (16:47 UTC) on 11 May 2011, near the town of Lorca, causing significant localized damage in the Region of Murcia, Spain, and panic among locals, and displacing many from their homes. The quake was preceded by a magnitude 4.4 (Mw) foreshock at 17:05 (15:05 UTC), that inflicted substantial damage to many older structures in the area, including the historical Espolón Tower of Lorca Castle, the Hermitage of San Clemente and the Convent of Virgen de Las Huertas. Three people were killed by a falling cornice. A total of nine deaths have been confirmed, while dozens are reported injured. The earthquake was the worst to hit the region since a 5.0 Mw tremor struck west of Albolote, Granada in 1956.

The Council of Europe Convention on Preventing and Combating Violence Against Women and Domestic Violence, better known as the Istanbul Convention, is a human rights treaty of the Council of Europe opposing violence against women and domestic violence which was opened for signature on 11 May 2011, in Istanbul, Turkey. The convention aims at prevention of violence, victim protection and to end the impunity of perpetrators. As of March 2019, it has been signed by 45 countries and the European Union. On 12 March 2012, Turkey became the first country to ratify the convention, followed by 37 other countries and the European Union from 2013 to 2024 (Albania, Andorra, Austria, Belgium, Bosnia and Herzegovina, Croatia, Cyprus, Denmark, Estonia, Finland, France, Georgia, Germany, Greece, Iceland, Ireland, Italy, Latvia, Liechtenstein, Luxembourg, Malta, Moldova, Monaco, Montenegro, the Netherlands, North Macedonia, Norway, Poland, Portugal, Romania, San Marino, Serbia, Slovenia, Spain, Sweden, Switzerland, Ukraine, United Kingdom). The Convention came into force on 1 August 2014. In 2021, Turkey became the first and only country to withdraw from the convention, after denouncing it on 20 March 2021. The convention ceased to be effective in Turkey on 1 July 2021, following its denunciation. On 1 June 2023 the Council of the European Union approved the EU's accession to the Istanbul Convention. On 28 June 2023 the European Union ratified the Council of Europe Convention on preventing and combating violence against women and domestic violence (CETS No. 210), known as the "Istanbul Convention". The Istanbul Convention entered into force in the EU on 1 October 2023, where the "EU member states that have not yet ratified the convention themselves will only be bound by the EU acquis, which implements the convention".

On 11 May 2013, two car bombs exploded in the Turkish town of Reyhanlı, a town of 64,000 people, 5 km from the Syrian border and the busiest land border post with Syria, in Hatay Province, Turkey. At least 52 people were killed and 140 injured in the attack.

Kinshasa, formerly named Léopoldville from 1881 to 1966, is the capital and largest city of the Democratic Republic of the Congo. Kinshasa is one of the world's fastest-growing megacities, with an estimated population of 18.5 million in 2026. It is the most densely populated city in the DRC, the third-most populous city and third-largest metropolitan area in Africa, the world's seventh-most populous city proper, and the fourth-most populous capital city in the world. It is the leading economic, political, and cultural center of the DRC, housing several industries including manufacturing, telecommunications, banking, and entertainment. The city also hosts some of the DRC's significant institutional buildings, such as the People's Palace, Palace of the Nation, Constitutional Court, Court of Cassation, Council of State, African Union City, Marble Palace, Government House, Kinshasa Financial Center, and other national departments and agencies.

Tatmadaw, officially the Defence Services, is the combined military of Myanmar, comprising the three main branches of Army, Navy and Air Force. The 2008 Constitution requires all the armed forces of Myanmar to be under the command of the Defence Services. Auxiliary services include the Myanmar Police Force, the Border Guard Forces, the Myanmar Coast Guard, and the People's Militia Units. From 1960s to 1990s, the full official name was the Pyithu Tatmadaw or People's Defence Services. The neutral term for military without the royal connotation is Sit-Tat, and the general term for armed forces is Letnetkai-Tat.

Shireen Abu Akleh was a prominent Palestinian-American journalist who worked as a reporter for 25 years for Al Jazeera, before she was killed by Israeli forces while wearing a blue press vest and covering a raid on the Jenin refugee camp in the Israeli-occupied West Bank. Abu Akleh was one of the most prominent names across the Middle East for her decades of reporting in the Palestinian territories, and seen as a role model for many Arab and Palestinian women. She is considered to be an icon of Palestinian journalism.

The solar storms of May 2024 were a series of powerful solar storms with extreme solar flares and geomagnetic storm components that occurred from 10 to 13 May 2024 during solar cycle 25. Different names have been used for the event in different regions, including 2024 Mother's Day Storm , the Gannon storm, Han Anniversary Storm, and Victory Day Storm. Only a small fraction of the strongest geomagnetic storms of recent decades have acquired names commonly used by the scientific community, and the multiple names assigned to the May 2024 event have prompted calls for a standardized international system for naming space weather events. The geomagnetic storm was the most powerful to affect Earth since March 1989, and produced aurorae at far lower latitudes than usual.

The Eurovision Song Contest 2024 was the 68th edition of the Eurovision Song Contest. It consisted of two semi-finals on 7 and 9 May and a final on 11 May 2024, held at the Malmö Arena in Malmö, Sweden, and presented by Petra Mede and Malin Åkerman. It was organised by the European Broadcasting Union (EBU) and host broadcaster Sveriges Television (SVT), which staged the event after winning the 2023 contest for Sweden with the song "Tattoo" by Loreen. Mede had previously presented the 2013 and 2016 contests.