April 15 in History

Samuel Johnson, often called Dr Johnson, was an English writer and polymath who made lasting contributions as a poet, playwright, essayist, moralist, literary critic, sermonist, biographer, editor, and lexicographer. The work for which he is best known is his 42,733-entry Dictionary of the English Language (1755). For this and other contributions in and to the English language, the Oxford Dictionary of National Biography has called him "arguably the most distinguished man of letters in English history".

Abraham Lincoln was the 16th president of the United States, serving from 1861 until his assassination in 1865. He led the United States through the American Civil War, defeating the Confederate States and playing a major role in the abolition of slavery.

General Electric Company (GE) was an American multinational conglomerate founded in 1892, incorporated in the state of New York and headquartered, during its final year of operation, in Boston.

The Philippine–American War, known alternatively as the Filipino–American War, Philippine Insurrection, or Tagalog Insurgency, emerged in early 1899 following the United States' annexation of the former Spanish colony of the Philippine Islands under the terms of the December 1898 Treaty of Paris following the Spanish–American War. Philippine nationalists had proclaimed independence in June 1898 and constituted the First Philippine Republic in January 1899. The United States did not recognize either event as legitimate, and tensions escalated until fighting commenced on February 4, 1899, in the Battle of Manila.

Braintree is a town in Norfolk County, Massachusetts, United States. It is officially known as a town, but Braintree is a city with a mayor–council form of government, and it is considered a city under Massachusetts law. The population was 39,143 at the 2020 census. It is part of the Greater Boston area, with access to the MBTA Red Line, and is a member of the Metropolitan Area Planning Council's South Shore Coalition. The first mayor of Braintree was Joe Sullivan, who served until January 2020. The current mayor of Braintree is Erin Joyce, who was elected in 2023, defeating incumbent Charles Kokoros.

Insulin is a peptide hormone produced by beta cells of the pancreatic islets encoded in humans by the insulin (INS) gene. It is the main anabolic hormone of the body. It regulates the metabolism of carbohydrates, fats, and protein by promoting the absorption of glucose from the blood into cells of the liver, fat, and skeletal muscles. In these tissues the absorbed glucose is converted into either glycogen, via glycogenesis, or fats (triglycerides), via lipogenesis; in the liver, glucose is converted into both. Glucose production and secretion by the liver are strongly inhibited by high concentrations of insulin in the blood. Circulating insulin also affects the synthesis of proteins in a wide variety of tissues. It is thus an anabolic hormone, promoting the conversion of small molecules in the blood into large molecules in the cells. Low insulin in the blood has the opposite effect, promoting widespread catabolism, especially of reserve body fat.

A popular uprising by Palestinian Arabs in Mandatory Palestine against the British administration, known as the Great Revolt, and later the Great Palestinian Revolt or the Palestinian Revolution, lasted from 1936 until 1939. The movement sought independence from British colonial rule and the end of British support for Zionism, including Jewish immigration and land sales to Jews.

The island was a British colony from 1813 to 1964 and the George Cross was awarded to the island of Malta in April 1942 by King George VI. This was during the Siege of Malta by Italy and Germany in the early part of World War II. The George Cross was incorporated into the flag of Malta beginning in 1943 and remains on the current design of the flag.

Jack Roosevelt Robinson was an American professional baseball player who was the first African American to play in Major League Baseball (MLB) in the modern era. Robinson broke the color line when he started at first base for the Brooklyn Dodgers on April 15, 1947. The Dodgers signing Robinson heralded the end of racial segregation in professional baseball, which had relegated black players to the Negro leagues since the 1880s.

McDonald's Corporation, doing business as McDonald's, is an American multinational fast food restaurant chain. As of 2024, it is the largest by revenue and second-largest by number of locations in the world, behind the Chinese chain Mixue Ice Cream & Tea.

On 15 April 1969, a United States Navy Lockheed EC-121M Warning Star of Fleet Air Reconnaissance Squadron One (VQ-1) on a reconnaissance mission was shot down by a North Korean MiG-21 aircraft over the Sea of Japan. The plane crashed 90 nautical miles (167 km) off the North Korean coast and all 31 Americans on board were killed, which constitutes the largest single loss of U.S. aircrew during the Cold War era.

The United States Air Force (USAF), Navy, and Marine Corps carried out air strikes, code-named Operation El Dorado Canyon, against Libya on 15 April 1986 in retaliation for the West Berlin discotheque bombing ten days earlier, which U.S. president Ronald Reagan blamed on Libyan leader Muammar Gaddafi. There were 40 reported Libyan casualties; one U.S. plane was shot down. One of the claimed Libyan deaths was of a baby girl, reported to be Gaddafi's daughter, Hana Gaddafi. However, there are doubts both as to whether she was really killed, or even if she truly existed.

The Marrakesh Agreement, manifested by the Marrakesh Declaration, was an agreement signed in Marrakesh, Morocco, by 123 nations on 15 April 1994, marking the culmination of the eight-year-long Uruguay Round and establishing the World Trade Organization, which officially came into being on 1 January 1995.

The Boston Marathon bombing, sometimes referred to as simply the Boston bombing, was an Islamist domestic terrorist attack that took place during the 117th annual Boston Marathon on April 15, 2013. Brothers Tamerlan and Dzhokhar Tsarnaev planted two homemade pressure cooker bombs that detonated near the finish line of the race 14 seconds and 210 yards (190 m) apart. Three people were killed and hundreds injured, including 12 victims who lost limbs.

The Bentiu massacre occurred on 15 April 2014 in the town of Bentiu, in the north of South Sudan, during the South Sudanese Civil War. The attack was described by The Economist as the "worst massacre" of the civil war.

On April 15, 2021, a mass shooting occurred at a FedEx Ground facility in Indianapolis, Indiana, United States. Nineteen-year-old Brandon Scott Hole killed eight people and wounded four before committing suicide. Three others were injured by other causes. The Federal Bureau of Investigation (FBI) concluded that the shooting was "an act of suicidal murder" driven by Hole's desire to prove his masculinity and experience killing. It remains the deadliest mass shooting in the history of Indiana.