June 4 in History

Charles Emmanuel IV was King of Sardinia and ruler of the Savoyard states from 16 October 1796 until 1802, when he abdicated in favour of his brother Victor Emmanuel I.

Marie-Joseph Paul Yves Roch Gilbert du Motier, Marquis de La Fayette, known in the United States as Lafayette, was a French military officer and politician who volunteered to join the Continental Army, led by General George Washington, in the American Revolutionary War. Lafayette commanded Continental Army troops in the decisive siege of Yorktown in 1781, the Revolutionary War's final major battle, which secured American independence. After returning to France, Lafayette became a key figure in the French Revolution of 1789 and the July Revolution of 1830 and continues to be celebrated as a hero in both France and the United States.

The Second Italian War of Independence was fought by the Second French Empire and the Kingdom of Sardinia against the Austrian Empire in 1859 and played a crucial part in the process of Italian Unification.

An express train is a type of passenger train that makes few or no stops between its origin and destination stations, usually major destinations, providing faster service than local trains that stop at many or all of the stations along their route. They are sometimes referred to by terms such as "fast train" or "high-speed train", e.g., the German Schnellzug. Though many high-speed rail services are express, not all trains described as express have been much faster than other services; trains in the United Kingdom in the 19th century were called expresses as long as they had a "journey speed" of at least 40 miles per hour (64 km/h). Express trains sometimes have higher fares than other routes, and bearers of a rail pass may be required to pay an extra fee. First class may be the only class available. Some express train routes that overlap with local train service may stop at stations near the tail ends of the line. This can be done, for example, where there is no supplemental local service to those stations. Express train routes may also become local at times when ridership is not high enough to justify parallel local service, such as at nighttime.

Henry Ford was an American industrialist and business magnate. As the founder of the Ford Motor Company, he is credited as a pioneer in making automobiles affordable for middle-class Americans through the system that came to be known as Fordism. In 1911, he was awarded a patent for the transmission mechanism that would be used in the Ford Model T and other automobiles.

Emily Wilding Davison was an English suffragette who fought for votes for women in Britain in the early twentieth century. A member of the Women's Social and Political Union (WSPU) and a militant fighter for her cause, she was arrested on nine occasions, went on hunger strike seven times and was force-fed on forty-nine occasions. She died after being hit by King George V's horse Anmer at the 1913 Derby when she walked onto the track during the race.

The Pulitzer Prizes are 23 annual awards given by Columbia University in New York City for achievements in the United States in "journalism, arts and letters". They were established in 1917 by the will of Joseph Pulitzer, who had made his fortune as a newspaper publisher.

Lev Davidovich Trotsky, better known as Leon Trotsky, was a Russian revolutionary, Soviet politician and political theorist. He was a key figure in the 1905 Revolution, the October Revolution of 1917, the Russian Civil War, and the establishment of the Soviet Union, from which he was exiled in 1929 before his assassination in 1940. Trotsky and Vladimir Lenin were widely considered the two most prominent figures in the Soviet state from 1917 until Lenin's death in 1924. Ideologically a Marxist and a Leninist, Trotsky's ideas and beliefs inspired a school of Marxism known as Trotskyism.

The president of the Republic of China, also known as the president of Taiwan, is the head of state of the Republic of China (Taiwan), as well as the commander-in-chief of the Republic of China Armed Forces. Before 1949 the position had the authority of ruling over mainland China, but losing control of it after communist victory in the Chinese Civil War, the remaining jurisdictions of the ROC have been limited to Taiwan, Penghu, Kinmen, Matsu, and smaller islands.

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.

The Battle of Midway was a major naval battle in the Pacific Theater of World War II that took place on 4–7 June 1942, six months after Japan's attack on Pearl Harbor and one month after the Battle of the Coral Sea. The Japanese Combined Fleet under the command of Isoroku Yamamoto suffered a decisive defeat by two carrier strike groups of the U.S. Pacific Fleet near Midway Atoll, about 1,300 mi northwest of Oahu. Yamamoto had intended to capture Midway and lure out and destroy the U.S. Pacific Fleet, especially the aircraft carriers which had escaped damage at Pearl Harbor.

The 1943 Argentine Revolution was a coup d'état on 4 June 1943 that ended the government of Ramón Castillo, who had been fraudulently elected to the office of vice-president before succeeding to the presidency in 1942 as part of the period known as the Infamous Decade. The coup d'état was launched by the lodge "United Officers' Group" (GOU), a secret military organization of nationalist nature. Although its soldiers shared different views of nationalism: there were Catholic nationalists, Radicals, military with a more pragmatic approach, and even fascists. The military was opposed to Governor Robustiano Patrón Costas, Castillo's hand-picked successor, a major landowner in Salta Province and a primary stockholder in the sugar industry. The only serious resistance to the military coup came from the Argentine Navy, which confronted the advancing army columns at the Navy Petty-Officers School of Mechanics.

The United States Army North (ARNORTH) is a formation of the United States Army. An Army Service Component Command (ASCC) subordinate to United States Northern Command (NORTHCOM), ARNORTH is the joint force land component of NORTHCOM. ARNORTH is responsible for homeland defense and defense support of civil authorities. ARNORTH is headquartered at Fort Sam Houston, Texas. Redesignated ARNORTH in 2004, it was first activated in early January 1943 as the United States Fifth Army, under the command of Lieutenant General Mark W. Clark.

The Canadair North Star is a 1940s Canadian development, for Trans-Canada Air Lines (TCA), of the Douglas DC-4. Instead of radial piston engines used by the Douglas design, Canadair used Rolls-Royce Merlin V12 engines to achieve a higher cruising speed of 325 mph (523 km/h) compared with the 246 mph (396 km/h) of the standard DC-4. Requested by TCA in 1944, the prototype flew on 15 July 1946. The type was used by various airlines and by the Royal Canadian Air Force (RCAF). It proved to be reliable but noisy when in service through the 1950s and into the 1960s. Some examples continued to fly into the 1970s, converted to cargo aircraft.

The governor of California is the head of government of the U.S. state of California. The governor is the commander-in-chief of the California National Guard and the California State Guard.

Flight lieutenant is a junior officer rank used by some air forces, with origins from the Royal Air Force. The rank originated in the Royal Naval Air Service (RNAS) in 1914. It fell into abeyance when the RNAS merged with the Royal Flying Corps during the First World War but was revived in 1919 in the post-war RAF. The rank is used by air forces of many countries that have historical British influence.

Jonathan Jay Pollard is an American-born Israeli spy and former intelligence analyst who was jailed for spying for Israel.

An election for the second supreme leader of Iran was held on 4 June and 6 August 1989 following the death of the first supreme leader Ruhollah Khomeini.

Solidarity, full name Independent Self-Governing Trade Union "Solidarity", is a Polish trade union founded in August 1980 at the Lenin Shipyard in Gdańsk, Poland. Subsequently, it was the first independent trade union in a Warsaw Pact country to be recognised by the state.

Ariane 5 is a retired European heavy-lift space launch vehicle operated by Arianespace for the European Space Agency (ESA). It was launched from the Guiana Space Centre (CSG) in French Guiana. It was used to deliver payloads into geostationary transfer orbit (GTO), low Earth orbit (LEO) or further into space. The launch vehicle had a streak of 82 consecutive successful launches between 9 April 2003 and 12 December 2017. In development since 2014, Ariane 6, a direct successor system was first launched in 2024.

The Dragon Spacecraft Qualification Unit was a boilerplate version of the Dragon spacecraft manufactured by SpaceX. After using it for ground tests to rate Dragon's shape and mass in various tests, SpaceX launched it into low Earth orbit on the maiden flight of the Falcon 9 rocket, on June 4, 2010. SpaceX used the launch to evaluate the aerodynamic conditions on the spacecraft and performance of the carrier rocket in a real-world launch scenario, ahead of Dragon flights for NASA under the Commercial Orbital Transportation Services program. The spacecraft orbited the Earth over 300 times before decaying from orbit and reentering the atmosphere on 27 June.

On June 4, 2023, a series of planned anti-government marches took place in several areas of Poland, with the main one being held in the capital city of Warsaw. The protests were additionally motivated by the passing of the bill commonly referred to as "Lex Tusk", which critics argued would disrupt the constitutional separation of powers by giving the ruling party of PiS excessive judicial oversight. The Polish opposition in the national Parliament, as well as numerous foreign commentators, considered the law's approval an extension of the perceived constitutional crisis under the presidency of Andrzej Duda and the government headed by Prime Minister Mateusz Morawiecki.