May 16 in History

Emperor Suzaku (朱雀天皇（すざくてんのう）, Suzaku-tennō; 7 September 921 – 6 September 952) was the 61st emperor of Japan, according to the traditional order of succession. Suzaku's reign spanned the years from 930 through 946.

Baldwin I (Dutch: Boudewijn; French: Baudouin; July 1172 – c. 1205) was the first Emperor of the Latin Empire of Constantinople; Count of Flanders (as Baldwin IX) from 1194 to 1205 and Count of Hainaut (as Baldwin VI) from 1195 to 1205. Baldwin was one of the most prominent leaders of the Fourth Crusade, which resulted in the sack of Constantinople in 1204, the conquest of the Byzantine Empire, and the foundation of the Latin Empire. The following year he was defeated at the Battle of Adrianople by Kaloyan, the emperor of Bulgaria, and spent his last days as a prisoner.

The Hundred Years' War (French: Guerre de Cent Ans; 1337–1453) was a series of conflicts between the kingdoms of England and France and a civil war in France during the late Middle Ages. It emerged from feudal disputes over the Duchy of Aquitaine and was triggered by a claim to the French throne made by Edward III of England. The war grew into a broader military, economic, and political struggle involving different factions from across Western Europe, fuelled by emerging nationalism on both sides. The periodisation of the war typically charts it as taking place over 116 years. However, it was an intermittent conflict which was frequently interrupted by external factors, such as the Black Death, and several years of truces. The Hundred Years' War was a significant conflict in the Middle Ages. During the war, five generations of kings from two rival dynasties fought for the throne of France, then the wealthiest and most populous kingdom in Western Europe. The war had a lasting effect on European history: both sides produced innovations in military technology and tactics, including professional standing armies and artillery, that permanently changed European warfare. Chivalry reached its height during the conflict and subsequently declined. Stronger national identities took root in both kingdoms, which became more centralized and gradually emerged as global powers. The term "Hundred Years' War" was adopted by later historians and included dynastically related conflicts in Spain and Belgium, resulting in the longest military conflict in European history. The war is commonly divided into three phases, separated by truces: the Edwardian War (1337–1360), the Caroline War (1369–1389), and the Lancastrian War (1415–1453). Each side drew many allies into the conflict, with English forces initially prevailing; however, the French forces under the House of Valois ultimately retained control over the Kingdom of France. The French and English monarchies thereafter remained separate, despite the monarchs of England and Great Britain styling themselves as sovereigns of France until 1802.

The House of Medici (English: MED-itch-ee, UK also mə-DEE-chee; Italian: [ˈmɛːditʃi]) was an Italian banking family and political dynasty that first consolidated power in the Republic of Florence under Cosimo de' Medici and his grandson Lorenzo "the Magnificent" during the first half of the 15th century. The family originated in the Mugello region of Tuscany, and prospered gradually in trade until it was able to fund the Medici Bank. This bank was the largest in Europe in the 15th century and facilitated the Medicis' rise to political power in Florence, although they officially remained citizens rather than monarchs until the 16th century. In 1532, the family acquired the hereditary title Duke of Florence. In 1569, the duchy was elevated to the Grand Duchy of Tuscany after territorial expansion. The Medici ruled the Grand Duchy from its inception under the builder Cosimo I until 1737, with the death of Gian Gastone de' Medici. The Medici produced four popes of the Catholic Church—Pope Leo X (1513–1521), Pope Clement VII (1523–1534), Pope Pius IV (1559–1565) and Pope Leo XI (1605)—and two queens of France—Catherine de' Medici (1547–1559) and Marie de' Medici (1600–1610). The Medici's grand duchy witnessed degrees of economic growth under the early grand dukes, but was bankrupt by the time of Cosimo III de' Medici (r. 1670–1723). The Medicis' wealth and influence was initially derived from the textile trade guided by the wool guild of Florence, the Arte della Lana. Like other families ruling in Italian signorie, the Medici dominated their city's government, were able to bring Florence under their family's power, and created an environment in which art and humanism flourished. The Italian Renaissance was inspired by the Medici along with other families of Italy, such as the Visconti and Sforza in Milan, the Este in Ferrara, the Borgia and Della Rovere in Rome, and the Gonzaga in Mantua. The Medici Bank, from when it was created in 1397 to its fall in 1494, was one of the most prosperous and respected institutions in Europe, and the Medici family was considered the wealthiest in Europe for a time. From this base, they acquired political power initially in Florence and later in wider Italy and Europe. They were among the earliest businesses to use the general ledger system of accounting through the development of the double-entry bookkeeping system for tracking credits and debits. The Medici family financed the construction of Saint Peter's Basilica and Florence Cathedral, and were patrons of Donatello, Brunelleschi, Botticelli, Leonardo da Vinci, Michelangelo, Raphael, Machiavelli, Galileo, and Francesco Redi, among many others in the arts and sciences. They funded the invention of the piano, and arguably that of opera. They were also protagonists of the Counter-Reformation, from the beginning of the Reformation through the Council of Trent and the French Wars of Religion.

Sir Thomas More (7 February 1478 – 6 July 1535), venerated in the Catholic Church as a martyr and saint, was an English lawyer, judge, social philosopher, author, statesman, theologian and Renaissance humanist. He also served Henry VIII as Lord Chancellor from October 1529 to May 1532. He wrote Utopia, published in 1516, which describes the political system of an imaginary island state. More opposed the Protestant Reformation, directing polemics against the theology of Martin Luther, Huldrych Zwingli and William Tyndale. More also opposed Henry VIII's separation from the Catholic Church, refusing to acknowledge Henry as supreme head of the Church of England and the annulment of his marriage to Catherine of Aragon. After refusing to take the Oath of Supremacy, More was convicted of treason on what he stated was false evidence, and was executed. At his execution, he was reported to have said: "I die the King's good servant, and God's first." Pope Pius XI canonised More in 1935 as a martyr. Pope John Paul II in 2000 declared him the patron saint of statesmen and politicians. In his proclamation the pope stated: "It can be said that he demonstrated in a singular way the value of a moral conscience ... even if, in his actions against heretics, he reflected the limits of the culture of his time".

Mary, Queen of Scots (8 December 1542 – 8 February 1587), also known as Mary Stuart or Mary I of Scotland, was Queen of Scotland from 14 December 1542 until her forced abdication on 24 July 1567. The only surviving legitimate child of King James V of Scotland, Mary was six days old when her father died, and she inherited the throne. During her childhood, Scotland was governed by regents, first by the heir to the throne, James Hamilton, Earl of Arran, and then by her mother, Mary of Guise. In 1548, she was betrothed to Francis, the Dauphin of France, and was sent to be brought up in France, where she would be safe from invading English forces during the Rough Wooing. Mary married Francis in 1558, becoming queen consort of France from his accession in 1559 until his death in December 1560. Widowed, Mary returned to Scotland in August 1561. The tense religious and political climate following the Scottish Reformation that Mary encountered on her return to Scotland was further agitated by prominent Scots such as John Knox, who openly questioned whether her subjects had a duty to obey her. The early years of her personal rule were marked by pragmatism, tolerance, and moderation. She issued a proclamation accepting the religious settlement in Scotland as she had found it upon her return, retained advisers such as James Stewart, Earl of Moray (her illegitimate half-brother), and William Maitland of Lethington, and governed as the Catholic monarch of a Protestant kingdom. In 1565, Mary married her half-cousin Henry Stuart, Lord Darnley; they had a son, James. Their marriage soured after Darnley orchestrated the murder of Mary's Italian secretary and close friend David Rizzio. In February 1567, Darnley's residence was destroyed by an explosion, and he was found murdered in the nearby garden. James Hepburn, 4th Earl of Bothwell, was generally believed to have orchestrated Darnley's death, but he was acquitted of the charge in April 1567 and in the following month, he married Mary. Following an uprising against the couple, Mary was imprisoned in Lochleven Castle. In July 1567, she was forced to abdicate in favour of her one-year-old son James VI. After an unsuccessful attempt to regain the throne, she fled southward seeking the protection of her first cousin once removed, Elizabeth I of England. As a great-granddaughter of Henry VII of England, Mary had once claimed Elizabeth's throne as her own and was considered the legitimate sovereign of England by many English Catholics, including participants in a rebellion known as the Rising of the North. Perceiving Mary as a threat, Elizabeth had her confined in various castles and manor houses in the interior of England. After eighteen and a half years in captivity, Mary was found guilty of plotting to assassinate Elizabeth in 1586 and was beheaded the following year at Fotheringhay Castle. Mary's life and execution established her in popular culture as a romanticised historical figure.

The Battle of Vasai or the Battle of Bassein was fought between the Maratha Empire and the Portuguese rulers of Vasai (Portuguese, Baçaim; English, Bassein), a town near Mumbai (Bombay) in the Konkan region of the present-day state of Maharashtra, India. The Marathas were led by Chimaji Appa, a brother of Peshwa Baji Rao I.

Marie Antoinette (Maria Antonia Josepha Johanna; 2 November 1755 – 16 October 1793) was Queen of France as the wife of Louis XVI from 10 May 1774 until the abolition of the French monarchy in 1792 during the French Revolution. Born in November 1755 at the Hofburg in Vienna, Marie Antoinette was the fifteenth child and youngest daughter of Emperor Francis I and Empress Maria Theresa. By right of her birth, she was an Austrian archduchess of the House of Habsburg-Lorraine. In 1769, Marie Antoinette was betrothed to Louis-Auguste, Dauphin of France, in order to strengthen the Franco–Austrian alliance. The two were married in 1770, thus making Marie Antoinette dauphine of France at the age of fourteen. In 1774, Louis-Auguste inherited the French throne as Louis XVI, becoming king of France, and Marie Antoinette queen consort. As queen, Marie Antoinette became increasingly a target of criticism by opponents of the domestic and foreign policies of Louis XVI and those opposed to the monarchy in general. The French libelles accused her of being profligate, promiscuous, having illegitimate children, and harboring sympathies for France's perceived enemies, including her native Austria. She was falsely accused of defrauding the Crown's jewelers in the Affair of the Diamond Necklace, but the accusations still damaged her reputation. During the French Revolution, she became known as Madame Déficit because the country's financial crisis was blamed on her lavish spending and her opposition to social and financial reforms proposed by Anne Robert Jacques Turgot and Jacques Necker. Several events were linked to Marie Antoinette during the Revolution after the government placed the royal family under house arrest in the Tuileries Palace in October 1789. The June 1791 attempted flight to Varennes and her role in the War of the First Coalition were immensely damaging to her image among French citizens. On 10 August 1792, the attack on the Tuileries forced the royal family to take refuge at the Legislative Assembly, and they were imprisoned in the Temple Prison on 13 August 1792. On 21 September 1792, France was declared a republic and the monarchy was abolished. Louis XVI was executed by guillotine on 21 January 1793 and Marie Antoinette moved to the Conciergerie. Her trial began on 14 October 1793; two days later, she was convicted by the Revolutionary Tribunal of high treason and executed by guillotine on 16 October 1793 at the Place de la Révolution.

The Battle of Alamance took place on May 16, 1771. It was the final confrontation of the Regulator Movement in colonial North Carolina. The rebellion was instigated because of various issues with the colonial government, and was primarily aimed at needed reforms to the Currency Act. Regulator supporters demanded other changes, including an end to the corruption of local politicians, a right to secret ballot voting, land reforms, and transparency in government. Named after the nearby Great Alamance Creek, the battle took place in what was then Orange County (and now located in Alamance County) in the Piedmont area, about 6 miles (9.7 km) south of present-day Burlington, North Carolina). The government forces effectively crushed the regulator resistance with their better equipped and trained force, though much smaller in number. Immediately after the fighting, the government forces captured several of the regulator leaders including Benjamin Merrill and Harmon Cox. Regulator leader Herman Husband, as well as others, were not present for the battle itself, but had accompanied the regulators up until the battle took place before withdrawing. Several of Tryon's military leaders went on to be high-ranking officers and politicians in North Carolina, including John Ashe, Robert Howe, and Richard Caswell.

The Continental Army was an army founded on June 14, 1775, by the Second Continental Congress in Philadelphia to coordinate the mutual defense of the United Colonies against the Kingdom of Great Britain during the Revolutionary War. It was periodically supplemented by state troops and volunteer militia. George Washington served as the Commander in Chief.

The Peninsular War (1808–1814) was fought in the Iberian Peninsula by the Iberian nations Spain and Portugal, along with the United Kingdom, against the invading and occupying forces of the First French Empire during the Napoleonic Wars. In Spain, it is considered to overlap with the Spanish War of Independence. It overlapped with the War of the Fifth Coalition (1809) and the War of the Sixth Coalition (1812–1814). The war can be said to have started when the French and Spanish armies invaded and occupied Portugal in 1807 by transiting through Spain, but it escalated in 1808 after Napoleonic France occupied Spain, which had been its ally. Napoleon Bonaparte forced the abdications of Ferdinand VII and his father Charles IV and then installed his brother Joseph Bonaparte on the Spanish throne and promulgated the Bayonne Constitution. Most Spaniards rejected French rule and fought a bloody war to oust them. The war on the peninsula lasted until the Sixth Coalition defeated Napoleon in 1814, and is regarded as one of the first wars of national liberation. It is also significant for the emergence of large-scale guerrilla warfare. In 1808, the Spanish army in Andalusia defeated the French at the Battle of Bailén, considered the first open-field defeat of the Napoleonic army on a European battlefield. Besieged by 70,000 French troops, a reconstituted national government, the Cortes—in effect a government-in-exile—fortified itself in the secure port of Cádiz in 1810. The British army, under Arthur Wellesley, the future Duke of Wellington, guarded Portugal and campaigned against the French alongside the reformed Portuguese Army and provided whatever supplies they could get to the Spanish, while the Spanish armies and guerrillas tied down vast numbers of Napoleon's troops. In 1812, when Napoleon set out with a massive army on what proved to be a disastrous invasion of Russia, a combined allied army defeated the French at Salamanca and took the capital Madrid. In the following year the Coalition defeated King Joseph Bonaparte's army at the Battle of Vitoria, paving the way for victory in the war in the Iberian Peninsula. Pursued by the armies of Britain, Spain and Portugal, Marshal Jean-de-Dieu Soult, no longer getting sufficient support from a depleted France, led the exhausted and demoralized French forces in a fighting withdrawal across the Pyrenees during the winter of 1813–1814. The years of fighting in Spain were a heavy burden on France's Imperial Army. While the French won several battles they were eventually defeated, as their communications and supplies were severely tested and their units were frequently isolated, harassed or overwhelmed by Spanish partisans fighting an intense guerrilla war of raids and ambushes. The Spanish armies were repeatedly beaten and driven to the peripheries, but they would regroup and relentlessly hound and demoralize the French troops. This drain on French resources led Napoleon, who had unwittingly provoked a total war, to call the conflict the "Spanish ulcer". For France, the Peninsular War bogged down Napoleon's troops, which allowed the rest of Europe to challenge Napoleon once more, including in the War of the Fifth Coalition and the French invasion of Russia, and culminating in Napoleon's defeat in the War of the Sixth Coalition. The war against Napoleon's occupation led to the Spanish Constitution of 1812, promulgated by the Cortes of Cádiz, later a cornerstone of European liberalism. Though victorious in war—France would never again threaten a full-scale invasion of Spain—the burden of war destroyed the social and economic fabric of both Portugal and Spain, and the following civil wars between liberal and absolutist factions ushered in revolts in Spanish America that led to the independence of all of Spain's colonies on the American mainland, and the beginning of an era of social turbulence, increased political instability, and economic stagnation in Iberia itself.

The Russian Empire was an empire that extended across northern Eurasia from 1721 until the proclamation of the Russian Republic in 1917, forming the final era of Tsarist Russia and the wider Russian monarchy. At its height in the late 19th century, it covered about 22,800,000 km2 (8,800,000 sq mi), roughly one-sixth of the world's landmass, making it the third-largest empire in history, behind only the British and Mongol empires. The 1897 Russian census found a population of 126 million with considerable ethnic, linguistic, religious, and socioeconomic diversity.

The Greek War of Independence, also known as the Greek Revolution or the Greek Revolution of 1821, was a successful war of independence fought by Greek revolutionaries against the Ottoman Empire from 1821 to 1829. In 1826, the Greeks were assisted by the British Empire, the Kingdom of France, and the Russian Empire, while the Ottomans were aided by their vassals, especially by the Eyalet of Egypt. The war led to the formation of modern Greece, which in subsequent years would be expanded to its current size. The revolution is commemorated by Greeks in Greece and the Greek diaspora on 25 March, as Independence Day.

Juan Godoy (1800 – 1842) was a Chilean farmer and miner who in 1832 discovered an outcrop (reventón) of silver 50 km (31 mi) south of Copiapó in Chañarcillo, sparking the Chilean silver rush.

The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States between the Union ("the North") and the Confederacy ("the South"), which was formed in 1861 by states that had seceded from the Union to preserve slavery in the United States. The South saw slavery as threatened because of the election of Abraham Lincoln and the growing abolitionist movement in the North. The war ended with Union victory, the dissolution of the Confederacy and the abolition of slavery, freeing four million African Americans. Decades of controversy over slavery came to a head when Abraham Lincoln, a Republican who opposed slavery's expansion, won the 1860 presidential election. Seven slave states in the South responded to Lincoln's victory by seceding from the United States and forming the Confederate States of America. The Confederacy seized US forts and other federal assets in the South. The war began on April 12, 1861, when the Confederacy bombarded Fort Sumter in South Carolina. A wave of enthusiasm for war swept over the North and South, as military recruitment soared. Four more Southern states seceded after the war began and, led by its president, Jefferson Davis, the Confederacy comprised eleven states, containing a third of the US population. Four years of intense combat, mostly in the South, ensued. During 1861–1862 in the western theater, the Union made permanent gains, though in the eastern theater the conflict was inconclusive. The abolition of slavery became a Union war goal on January 1, 1863, when Lincoln issued the Emancipation Proclamation, which declared all slaves in rebel states to be free, applying to more than 3.5 million of the 4 million enslaved people in the country. To the west, the Union first destroyed the Confederacy's river navy by the summer of 1862, then much of its western armies, and seized New Orleans. The successful 1863 Union siege of Vicksburg split the Confederacy in two at the Mississippi River, while Confederate general Robert E. Lee's incursion north failed at the Battle of Gettysburg. General Ulysses S. Grant's western successes led Lincoln to promote him to command of all Union armies in 1864. Inflicting an ever-tightening naval blockade of Confederate ports, the Union marshaled resources and manpower to attack the Confederacy from all directions. This led to the fall of Atlanta in 1864 to Union general William Tecumseh Sherman, followed by his March to the Sea, which culminated in his taking Savannah. The last significant battles raged around the ten-month siege of Petersburg, gateway to the Confederate capital of Richmond. The Confederates abandoned Richmond, and on April 9, 1865, Lee surrendered to Grant following the Battle of Appomattox Court House, setting in motion the end of the war. Lincoln lived to see this victory but was shot by an assassin on April 14, dying the next day. By the end of the war, much of the South's infrastructure had been destroyed. The Confederacy collapsed, the Thirteenth Amendment abolished slavery, and four million enslaved black people were freed. The war-torn nation then entered the Reconstruction era in an attempt to rebuild the country, bring the former Confederate states back into the United States, and grant civil rights to freed slaves. The war is one of the most extensively studied and written about episodes in the history of the United States. It remains the subject of cultural and historiographical debate. Of continuing interest is the myth of the Lost Cause of the Confederacy. The war was among the first to use industrial warfare. Railroads, the electrical telegraph, steamships, the ironclad warship, and mass-produced weapons were widely used. The war left an estimated 700,000 soldiers dead, along with an undetermined number of civilian deaths, making it the deadliest in American history. The technology and brutality of the Civil War foreshadowed the coming world wars.

The United States Congress is the legislative branch of the federal government of the United States. It is a bicameral legislature, including a lower body, the U.S. House of Representatives, and an upper body, the U.S. Senate. They both meet in the United States Capitol in Washington, D.C.

The United States Senate is a chamber of the bicameral United States Congress; it is the upper house, and the U.S. House of Representatives is the lower house. Together, the Senate and House have the authority under Article One of the Constitution to make and pass or defeat federal legislation.

The Mill River is a 13.5-mile-long (21.7 km) tributary of the Connecticut River arising in the western hilltowns of Hampshire County, Massachusetts. It is notable for dropping in elevation, along with its West Branch, more than 700 feet (210 m) over 15 miles (24 km).

The 16 May 1877 crisis, or more simply the Seize Mai, was a political crisis and institutional crisis that occurred in France during the Third Republic. It pitted the President of the Republic, Marshal Patrice de Mac Mahon, a convinced monarchist, against the republican majority that had emerged from the 1876 legislative elections. The events took place in a turbulent political context. In the Chamber of Deputies, the republicans led by Léon Gambetta, who sought to break with the lingering Orléanist spirit of the regime, attempted to impose their demands and fiercely opposed ultramontanism. Marshal de Mac Mahon, who reproached the Jules Simon government for its lack of firmness, dismissed it on 16 May 1877. From then on, the situation escalated: left-wing deputies met to sign the manifesto of the 363, which condemned the president's attitude; Mac Mahon in turn appointed the duke Albert de Broglie as head of a government that marked the return of the ordre moral. Mac Mahon dissolved the Chamber on 25 June 1877, but the subsequent legislative elections in October confirmed the republican majority. Initially, President Mac Mahon refused to yield and rumours of an alleged coup d'état circulated, but he eventually submitted and acknowledged his political defeat on 13 December 1877 by recalling the republican Jules Dufaure to the presidency of the Council. The significance of this political crisis was immense, as it definitively shaped the practical operation of the institutions. It set aside the conservative interpretation of the constitutional laws of 1875, in favour of a strictly republican interpretation of the Constitution in which the government is accountable only to parliament, which invests and dismisses it. The head of state's renunciation of his constitutional prerogatives henceforth placed the executive power under the domination of the legislative power, while the practice of the right of dissolution, although enshrined in the Constitution, disappeared. Furthermore, the 16 May crisis marked the transition between two eras of French democracy and strengthened the rooting in people's minds of a still-nascent republican regime, dashing the hopes of the various monarchist currents of seeing a new restoration established. An event relatively little studied by historiography, the Seize Mai has left some traces in popular culture and marks an important date for republicans, who regularly referred to it in their political struggles. It was also in the context of this crisis that Victor Hugo published his Histoire d'un crime.

Nikola Tesla (10 July 1856 – 7 January 1943) was a Serbian-American engineer, futurist, and inventor. He is known for his contributions to the design of the modern alternating current (AC) electricity supply system. Born and raised in the Austro-Hungarian Empire, Tesla first studied engineering and physics in the 1870s without receiving a degree. He then gained practical experience in the early 1880s working in telephony and at Continental Edison in the new electric power industry. In 1884, he migrated to the United States, where he became a naturalized citizen. He worked for a short time at the Edison Machine Works in New York City before he struck out on his own. With the help of partners to finance and market his ideas, Tesla set up laboratories and companies in New York to develop a range of electrical and mechanical devices. His AC induction motor and related polyphase AC patents, licensed by Westinghouse Electric in 1888, earned him a considerable amount of money and became the cornerstone of the polyphase system, which Westinghouse marketed. Tesla conducted a range of experiments with mechanical oscillators/generators, electrical discharge tubes, and early X-ray imaging among other things, in an attempt to develop inventions he could patent and market. He built a wirelessly controlled boat, one of the first wirelessly controlled vehicles ever produced. Tesla became well known as an inventor and demonstrated his achievements to celebrities and wealthy patrons at his lab. He was noted for his showmanship at public lectures. Throughout the 1890s, Tesla pursued his ideas for wireless lighting and worldwide wireless electric power distribution in his high-voltage, high-frequency power experiments in New York and Colorado Springs. In 1893, he made pronouncements on the possibility of wireless communication with his devices. Tesla tried to put these ideas to practical use in his unfinished Wardenclyffe Tower project, an intercontinental wireless communication and power transmitter, but ran out of funding before he could complete it. After Wardenclyffe, Tesla experimented with a series of inventions in the 1910s and 1920s with varying degrees of success. Having spent most of his money, Tesla lived in a series of New York hotels, leaving behind unpaid bills. He died in New York City in January 1943. Tesla's work fell into relative obscurity following his death, until 1960, when the General Conference on Weights and Measures named the International System of Units (SI) measurement of magnetic flux density the tesla in his honor. There has been a resurgence in popular interest in Tesla since the 1990s. In 2013, Time magazine named him one of the 100 most significant figures of all time.

The 1891 International Electrotechnical Exhibition was held between 16 May and 19 October on the disused site of the three former Westbahnhöfe (Western Railway Stations) in Frankfurt am Main, Germany. The exhibition featured the first long-distance transmission of high-power, three-phase electric current, which was generated 175 km away at Lauffen am Neckar. As a result of this successful field trial, three-phase current became established for electrical transmission networks throughout the world.

The United Kingdom of Great Britain and Ireland was established by the Acts of Union in 1801 that united the Kingdom of Great Britain and the Kingdom of Ireland into one unitary and sovereign state. It continued in this form until 1922, after the Irish Free State gained independence, with the remainder continuing as the United Kingdom of Great Britain and Northern Ireland.

The Sedition Act of 1918 (Pub. L. 65–150, 40 Stat. 553, enacted May 16, 1918) was an Act of the United States Congress that extended the Espionage Act of 1917 to cover a broader range of offenses, notably speech and the expression of opinion that cast the government or the war effort in a negative light or interfered with the sale of government bonds. It forbade the use of "disloyal, profane, scurrilous, or abusive language" about the United States government, its flag, or its armed forces or that caused others to view the American government or its institutions with contempt. Those convicted under the act generally received sentences of imprisonment for five to 20 years. The act also allowed the Postmaster General to refuse to deliver mail that met those same standards for punishable speech or opinion. It applied only to times "when the United States is in war". The U.S. was in a declared state of war at the time of passage, the First World War. The law was repealed on December 13, 1920. Though the legislation enacted in 1918 is commonly called the Sedition Act, it was actually a set of amendments to the Espionage Act. Therefore, many studies of the Espionage Act and the Sedition Act find it difficult to report on the two "acts" separately. For example, one historian reports that "some fifteen hundred prosecutions were carried out under the Espionage and Sedition Acts, resulting in more than a thousand convictions". Court decisions do not use the shorthand term Sedition Act, but the correct legal term for the law, the Espionage Act, whether as originally enacted in 1917 or as amended in 1918.

The 1918 White victory parade in Helsinki was a military parade of the Finnish White Guard on 16 May 1918 celebrating their decisive victory in the Finnish Civil War, which officially ended the day before. The parade took place in Helsinki, the capital of Finland. The parade was presided by General Carl Gustaf Emil Mannerheim, the then Commander-in-Chief of the Finnish Defense Forces, a position he would resign from 14 days later. It consisted of 12,000 men marching down the streets of the capital. It is regarded today as a political show of force organized by Mannerheim to strengthen his position vis-à-vis the German troops in the country. The parade played an important role in Mannerheim's later career, as a result of which he became nationally known to the point of becoming the 6th President of Finland in the mid-1940s. The Whites also organized victory parades in other cities they had occupied during the war. Large parades were also held in Vaasa and Vyborg, both of which Mannerheim attended.

The NC-4 is a Curtiss NC flying boat that was the first aircraft to fly across the Atlantic Ocean, albeit not non-stop. The NC designation was derived from the collaborative efforts of the Navy (N) and Curtiss (C). The NC series flying boats were designed to meet wartime needs, and after the end of World War I they were sent overseas to validate the design concept.

Pope Benedict XV was head of the Catholic Church from 1914 until his death in January 1922. His pontificate was largely focused on World War I and its political, social, and humanitarian consequences in Europe.

Claudio Giovanni Antonio Monteverdi was an Italian composer, choirmaster and string player. A composer of both secular and sacred music, and a pioneer in the development of opera, he is considered a crucial transitional figure between the Renaissance and Baroque periods of music history.

Hollywood, sometimes informally called Tinseltown, is a neighborhood in Central Los Angeles, California. Its name has become synonymous with the American film industry and the people associated with it. Many notable film studios such as Universal Pictures, Paramount Pictures, Warner Bros., Walt Disney Studios and Sony Pictures are located in or near Hollywood.

The Holocaust, known in Hebrew as the Shoah, was the genocide of European Jews during World War II. From 1941 to 1945, Nazi Germany and its collaborators systematically murdered around six million Jews across German-occupied Europe, approximately two-thirds of Europe's Jewish population. The murders were committed primarily through mass shootings across Eastern Europe and poison gas chambers in extermination camps, chiefly Auschwitz-Birkenau, Treblinka, Belzec, Sobibor, Chełmno and Majdanek death camps in occupied Poland. Concurrent Nazi persecutions killed millions of other non-Jewish civilians and prisoners of war (POWs); the term Holocaust is sometimes used to include the murder and persecution of non-Jewish groups, such as the Romani and Soviet POWs.

Operation Chastise, commonly known as the Dambusters Raid, was an attack on German dams carried out on the night of 16/17 May 1943 by 617 Squadron RAF Bomber Command, later called the Dam Busters, using special bouncing bombs developed by Barnes Wallis. The Möhne and Edersee dams were breached, causing catastrophic flooding of the Ruhr valley and of villages in the Eder valley; the Sorpe Dam sustained only minor damage. Two hydroelectric power stations were destroyed and several more damaged. Factories and mines were also damaged and destroyed. An estimated 1,600 civilians – about 600 Germans and 1,000 enslaved labourers, mainly Soviet – were killed by the flooding. Despite rapid repairs by the Germans, production did not return to normal until September. The RAF lost 56 aircrew, with 53 dead and three captured, amid losses of eight aircraft.

The Levant Crisis, also known as the Damascus Crisis, the Syrian Crisis, or the Levant Confrontation, was a military confrontation that took place between British and French forces in Syria in May 1945 soon after the end of World War II in Europe. French troops had tried to quell nationalist protests in Syria against the continued occupation of the Levant by France. With hundreds of Syrian nationalists being killed by French troops, British Prime Minister Winston Churchill, wanting to maintain friendly relations with the Arabs, opposed French action and sent British forces into Syria from Transjordan with orders to fire on the French if necessary.

A transatlantic flight (TATL) is the flight of an aircraft across the Atlantic Ocean from Europe, Africa, South Asia, or the Middle East to North America, South America, or vice versa. Such flights have been made by fixed-wing aircraft, airships, balloons and other aircraft. The distance of contemporary flights varies between 3,000km to 15,000km.

The Kengir uprising was a prisoner rebellion that occurred in Kengir (Steplag), a Soviet MVD special camp for political prisoners, during May and June 1954. Its duration and intensity distinguished it from other Gulag rebellions during the same period, such as the Vorkuta uprising and Norilsk uprising.

The Tritons' Fountain is a fountain located in Floriana, Malta. It consists of three bronze Tritons holding up a large basin, balanced on a concentric base built out of concrete and clad in 730 tons of travertine slabs. The fountain is one of Malta's most important Modernist landmarks.

Theodore Harold Maiman was an American engineer and physicist who is widely credited with the invention of the laser. Maiman's laser led to the subsequent development of many other types of lasers. The laser was successfully fired on May 16, 1960. In a July 7, 1960, press conference in Manhattan, Maiman and his employer, Hughes Aircraft Company, announced the laser to the world. Maiman was granted a patent for his invention, and he received many awards and honors for his work. His experiences in developing the first laser and subsequent related events are recounted in his book, The Laser Odyssey, later being republished in 2018 under a new title, The Laser Inventor: Memoirs of Theodore H. Maiman.

Park Chung Hee was a South Korean politician and army officer who seized power in the May 16 coup of 1961, and served as the third president of South Korea from 1962 until his assassination in 1979. His regime oversaw a period of intense economic growth and transformation, making Park one of the most consequential leaders in Korean history, although his legacy as a military dictator remains a bitter subject.

The Communist Party of China (CPC), commonly known as the Chinese Communist Party (CCP), is the founding and sole governing party of the People's Republic of China (PRC). Founded in 1921, the CCP won the Chinese Civil War against the Kuomintang and proclaimed the establishment of the PRC under the chairmanship of Mao Zedong in October 1949. The CCP has since governed China and has had absolute control over the country's armed forces and law enforcement. As of 2025, the CCP has more than 101 million members, making it the second largest political party by membership in the world.

The Venera program was a series of space probes developed by the Soviet Union between 1961 and 1984 to gather information about the planet Venus. A total of eighteen probes were sent, including two related Vega probes.

The Antonov An-24 is a 50-seat twin turboprop regional airliner designed in 1957 in the Soviet Union by the Antonov Design Bureau. Later variants saw other uses, such as military transport and aerial cartography. The aircraft was manufactured by the Kyiv, Irkutsk and Ulan-Ude Aviation Factories. It was license-produced in China as the early versions of the Xi'an Y-7.

Josip Broz, commonly known as Tito, was a Yugoslav communist revolutionary and politician who led Yugoslavia as prime minister from 1943 to 1963 and as president from 1953 until his death in 1980. He was the longtime leader of the League of Communists of Yugoslavia, supreme commander of the Yugoslav Partisans during World War II, and one of the founders of the Non-Aligned Movement. The political ideology and policies associated with his rule are known as Titoism.

Junko Tabei was a Japanese mountaineer, author and teacher. She was the first woman to reach the summit of Mount Everest and ascend the Seven Summits, climbing the highest peak on every continent.

The surgeon general of the United States is the operational head of the United States Public Health Service Commissioned Corps (PHSCC) and thus a leading spokesperson on matters of public health in the federal government of the United States. The surgeon general's office and staff are known as the Office of the Surgeon General (OSG), which is housed within the Office of the Assistant Secretary for Health.

Elizabeth II was Queen of the United Kingdom and other Commonwealth realms from 6 February 1952 until her death in 2022. She was queen regnant of 32 sovereign states during her lifetime and was the monarch of 15 realms at her death. Her reign of 70 years and 214 days is the longest of any British monarch, the second-longest of any sovereign state, and the longest of any queen regnant in history.

Mobutu Sese Seko Nkuku Ngbendu wa za Banga, often shortened to Mobutu Sese Seko or Mobutu and also known by his initials MSS, was a Congolese politician and military officer who was the first and only president of Zaire from 1971 to 1997. Previously, Mobutu served as the second president of the Democratic Republic of the Congo, from 1965 to 1971.

Morocco, officially the Kingdom of Morocco, is a country in the Maghreb region of North Africa. It has coastlines on the Mediterranean Sea to the north and the Atlantic Ocean to the west, and has land borders with Algeria to the east; the Spanish exclaves of Ceuta, Melilla and Peñón de Vélez de la Gomera along the north, which it claims together with several small Spanish-controlled islands; and the disputed territory of Western Sahara to the south, partly occupied by Morocco since 1975. Morocco also claims to share a border with Mauritania through the disputed territory of Western Sahara. It has a population of approximately 37 million. Its capital is Rabat, while its largest city is Casablanca.

STS-134 was the penultimate mission of NASA's Space Shuttle program and the 25th and last spaceflight of Space Shuttle Endeavour. This flight delivered the Alpha Magnetic Spectrometer and an ExPRESS Logistics Carrier to the International Space Station. Mark Kelly served as the mission commander. The European segment of the mission was called "DAMA".

On the afternoon of May 16, 2025, an intense, extremely large, and destructive tornado tracked for more than 12 miles (19 km) through urban areas of Greater St. Louis, including Greater Ville and Fountain Park, in the U.S. state of Missouri. The massive and rainwrapped EF3 tornado, which was 1.8 mi (2.9 km) wide at its largest, inflicted widespread destruction across St. Louis, Missouri. Upon crossing the Mississippi River into Illinois, the tornado weakened rapidly and dissipated just north of downtown Granite City. Officials from the Federal Emergency Management Agency (FEMA) called the residential damage the largest-scale the organization had surveyed since the 2011 tornado in Joplin, Missouri. Federal aid has been requested but is pending acceptance. Volunteer engineers have been surveying homes throughout the city. Damage estimate put the damage caused by the tornado at $1.6 billion, among the highest figures for an individual tornado on record. The tornado was the first deadly tornado in St. Louis since 1959, and the largest ever in the region.

In the late evening hours of May 16, 2025, a large and deadly nocturnal EF4 tornado moved through the western Cumberland Plateau, impacting the Kentucky cities of Somerset and London. The tornado, which was on the ground for almost an hour and a half, killed 18 people and injured 108 others along a 60 mi (97 km) track. It was the second tornado that day rated EF4 by the National Weather Service, with the first one occurring hours prior in Illinois as part of a major tornado outbreak in mid-May.