May 15th

The Soviet Union began to withdraw its estimated 115,000 troops from Afghanistan.
Soviet–Afghan War
Alabama Governor George Wallace was shot and crippled as he campaigned for the presidency.
George Wallace
Egypt, Syria, Transjordan and Iraq invade Israel. The First Arab-Israeli War was initiated by Israel's proclamation of independence on the day before the invasion. It lasted nearly 10 months and caused thousands of casualties on both sides.
1948 Arab–Israeli War
The first McDonald's fast food restaurant opens. Maurice “Mac” and Richard “Dick” McDonald opened McDonald's Bar-B-Q in San Bernardino. Today, McDonald's is the world's largest fast food chain.
History of McDonald's
The first airline stewardess goes on duty. Ellen Church and her team served snacks on a United Airlines flight from Oakland to Chicago. The flight attendants were also responsible for refueling the aircraft, handling luggage, and checking tickets.
Flight attendant
The first Mickey Mouse film is screened. The 6-minute film “Plane Crazy” directed by Walt Disney shows Mickey trying to fly an airplane in reference to Charles Lindbergh. Today, Mickey Mouse is one of the world's most recognized cartoon characters and the official mascot of the Walt Disney Company.
Steamboat Willie
The first air mail route in the U.S. was established between New York and Washington, DC, with a stop at Philadelphia.
Airmails of the United States
The Standard Oil Company, headed by John D. Rockefeller, was ordered dissolved by the Supreme Court, under the Sherman Antitrust Act.
Standard Oil
National Woman Suffrage Association forms in New York, founded by Susan B. Anthony and Elizabeth Cady Stanton.
National Woman Suffrage Association
The U.S. Department of Agriculture was created by an act of Congress on this day.
United States Department of Agriculture
Robert Walpole becomes effectively Britain's 1st prime minister (was: chief min).
Robert Walpole
The world's first machine gun is patented. British lawyer, James Puckle, invented the 25.4 mm caliber “Puckle Gun” for the use on ships. It was designed for two bullet types: round bullets for Christians and (more damaging) square bullets for Turks.
Puckle gun
Johannes Kepler discovers harmonics law.
Kepler's laws of planetary motion
Pope Innocent IV issues the papal bull ad exstirpanda, which authorizes, but also limits, the torture of heretics in the Medieval Inquisition.
Medieval Inquisition