May 15 in History

The Peace of Münster, signed on 30 January 1648, was a treaty between Philip IV of Spain and the Lords States General of the Dutch Republic. Negotiated in parallel to, but not part of, the Peace of Westphalia, under its terms Spain formally recognised the independent Dutch Republic, and ended the Eighty Years' War.

The French Revolution was a period of political and societal change in France that began with the Estates General of 1789 and ended with the Coup of 18 Brumaire on 9 November 1799. Many of the revolution's ideas are considered fundamental principles of liberal democracy, and its values remain central to modern French political discourse. It was caused by a combination of social, political, and economic factors which the existing regime proved unable to manage.

Francis Baily was an English astronomer. He is most famous for his observations of "Baily's beads" during a total eclipse of the Sun. Baily was also a major figure in the early history of the Royal Astronomical Society, as one of the founders and as the president four times.

The Arana–Southern Treaty or Convention of Settlement, formally known as the Convention for the perfect restoration of friendly relations between the Argentine Confederation and Her Britannic Majesty, was a peace treaty signed between the United Kingdom of Great Britain and Ireland and the Argentine Confederation following the Anglo-French blockade of the Río de la Plata.

The Battle of New Market was fought on May 15, 1864, in Virginia during the Valley Campaigns of 1864 in the American Civil War. A makeshift Confederate army of 4,100 men defeated the larger Army of the Shenandoah under Major General Franz Sigel, delaying the capture of Staunton by several weeks.

Las Vegas, colloquially referred to as Vegas, is the most populous city in the U.S. state of Nevada and the seat of Clark County. It is the 24th-most populous city in the United States, with 641,903 residents at the 2020 census. The Las Vegas metropolitan area has an estimated 2.4 million residents and is the 29th-largest metropolitan area in the country. Las Vegas is an internationally renowned major resort city, known primarily for its gambling, shopping, fine dining, entertainment, and nightlife. Most of these venues are located in downtown Las Vegas or on the Las Vegas Strip, which is outside city limits in the unincorporated towns of Paradise and Winchester. The Las Vegas Valley serves as the leading financial, commercial, and cultural center in Nevada.

The Torreón massacre was a massacre that took place on 13 to15 May 1911 in the Mexican city of Torreón, Coahuila. A total of 308 Cantonese were killed, amounting to half the Chinese community in Torreón. The victims, accused of collusion with Porfirio Díaz, were killed by a local mob and the revolutionary forces of Francisco I. Madero. A large number of Chinese homes and shops were looted and destroyed.

The Finnish Civil War was a civil war in 1918 fought for the leadership and control of recently independent Finland between White Finland and the Finnish Socialist Workers' Republic. The clashes took place in the context of the national, political, and social turmoil caused by World War I in Europe. The belligerents were the paramilitary Red Guards, led by a section of the Social Democratic Party with backup of the Russian bolsheviks, and the paramilitary White Guards of the senate. General C. G. E. Mannerheim led the White Guards with major assistance by both the Finnish Jäger Battalion trained in Germany and the German Imperial Army, along the German goal to control Fennoscandia and Petrograd of Russia. The Reds, composed of industrial and agrarian working class people, controlled the cities and industrial centres of southern Finland. The Whites, composed of land owners and the middle and upper class, controlled the rural central and northern Finland.

The city of Smyrna and surrounding areas were under Greek military occupation from 15 May 1919 until 9 September 1922. The Allied Powers authorized the occupation and creation of the Zone of Smyrna during negotiations regarding the partition of the Ottoman Empire to protect the ethnic Greek population living in and around the city. The Greek landing on 15 May 1919 was celebrated by the substantial local Greek population but quickly resulted in ethnic violence in the area. This violence decreased international support for the occupation and led to a rise in Turkish nationalism. The high commissioner of Smyrna, Aristeidis Stergiadis, firmly opposed discrimination against the Turkish population by the administration; however, ethnic tensions and discrimination remained. Stergiadis also began work on projects involving resettlement of Greek refugees, the foundations for a university, and some public health projects. Smyrna was a major base of operations for Greek troops in Anatolia during the Greco-Turkish War (1919–1922).

A coup d'état, or simply a coup, is typically an illegal and overt attempt by a military organization or other government elites to unseat an incumbent person or leadership. A self-coup is said to take place when a leader, having come to power through legal means, tries to stay in power through illegal means.

The 1934 Latvian coup d'état known in Latvia also as the 15 May Coup or Ulmanis' Coup, was a self-coup by the veteran Prime Minister Kārlis Ulmanis against the parliamentary system in Latvia. His regime lasted until the Soviet occupation of Latvia in 1940.

World War II, or the Second World War, was a global conflict between two coalitions: the Allies and the Axis powers. Nearly all of the world's countries participated. Tanks and aircraft played major roles, the latter enabling the strategic bombing of cities and delivery of the only nuclear weapons used in war. World War II was the deadliest conflict in history, causing the death of 60 to 75 million people. Millions died as a result of massacres, starvation, disease, and genocides, including the Holocaust. After the Allied victory, Germany, Austria, Japan, and Korea were occupied, and German and Japanese leaders were tried for war crimes.

The Gloster E.28/39, was the first British turbojet-engined aircraft, first flying in 1941. It was the third turbojet aircraft to fly after the German Heinkel He 178 (1939) and Heinkel He 280 (1941).

Joseph Vissarionovich Stalin was a Soviet revolutionary and politician who led the Soviet Union from 1924 until his death in 1953. He held office as general secretary of the Communist Party from 1922 to 1952 and as premier from 1941 until his death. Despite initially governing the country as part of a collective leadership, he eventually consolidated power to become a dictator by the 1930s. Stalin codified the Communist Party's official interpretation of Marxism as Marxism–Leninism, and his version of it is referred to as Stalinism.

Mandatory Palestine, officially known as Palestine, was a British administrative territory between 1920 and 1948 in the region of Palestine. From 1922, under the terms of the League of Nations, it was the Mandate for Palestine. The territory was administered by the British, who deemed it unfit for self-governance.

Project Mercury was the first human spaceflight program of the United States, running from 1958 through 1963. An early highlight of the Space Race, its goal was to put a man into Earth orbit and return him safely, ideally before the Soviet Union. Taken over from the US Air Force by the newly created civilian space agency NASA, it conducted 20 uncrewed developmental flights, and six successful flights by astronauts. The program, which took its name from Roman mythology, cost $2.83 billion. The astronauts were collectively known as the "Mercury Seven", and each spacecraft was given a name ending with a "7" by its pilot.

The Ryukyu Islands , also known as the Nansei Islands or the Ryukyu Arc , are a chain of Japanese islands that stretch southwest from Kyushu to Taiwan. Administratively, they are divided between Kagoshima Prefecture and Okinawa Prefecture. The larger ones are mostly volcanic islands and the smaller mostly coral. The largest is Okinawa Island.

Aeroflot Flight 1802 was a commercial flight from Vinnytsia to Moscow that crashed after the rudder deflected sharply and the propellers feathered on 15 May 1976. All 52 passengers and crew aboard the aircraft perished in the crash.

Édith Jeanne Thérèse Cresson is a French politician of the Socialist Party. She served as Prime Minister of France from 1991 to 1992, the first woman to do so and only woman until Élisabeth Borne's appointment in 2022. Her political career ended in scandal as a result of corruption charges dating from her tenure as European Commissioner for Research, Science and Technology.

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.

The Arsenal Football Club is an English professional football club based in Islington, North London, England. They compete in the Premier League, the top tier of English football. In domestic football, Arsenal have won 13 league titles, a record 14 FA Cups, 2 League Cups, 17 FA Community Shields and a Football League Centenary Trophy. In European football, they have won one European Cup Winners' Cup and one Inter-Cities Fairs Cup. In terms of trophies won, it is the third-most successful club in English football.

From 15 to 21 May 2013, a series of deadly bombings and shootings struck the central and northern parts of Iraq, with a few incidents occurring in towns in the south and far west as well. The attacks killed at least 449 people and left 732 others injured in one of the deadliest outbreaks of violence in years.

The prime minister of Slovakia, officially the chairman of the government of the Slovak Republic, commonly referred to in Slovakia as Predseda vlády or informally as Premiér, is the head of the government of the Slovak Republic. Officially, the officeholder is the third-highest constitutional official in Slovakia after the president of the Republic (appointer) and chairman of the National Council; in practice, the appointee is the country's leading political figure.