In one of the great surprises in diplomatic history, French Foreign Minister Charles Maurice de Talleyrand makes an offer to sell all of Louisiana Territory to the United States.

On April 11, 1888, 24-year-old Henry Ford marries Clara Jane Bryant on her 22nd birthday at her parent’s home in Greenfield Township, Michigan. Clara Ford would prove to be a big supporter of her husband’s business ideas: Fifty years later, Henry Ford—who by then had founded the Ford Motor Company, invented the top-selling Model T car and revolutionized the auto industry with his mass-production technology—was quoted in a 1938 New York Times Magazine article as saying, “The greatest day of my life is when I married Mrs. Ford.”

On April 11, 1921, KDKA in Pittsburgh broadcasts the first live sporting event on the radio, a boxing match between Johnny Ray and Johnny Dundee. Pittsburgh Daily Post sports editor Florent Gibson calls the event, about four months before KDKA's Harold Arlin announces the first Major League Baseball game broadcast on radio.

The witty and caustic Dorothy Parker resigns her job as drama critic for The New Yorker. However, she continued to write book reviews until 1933, which were published in 1971 as A Month of Saturdays.

On April 11, 1945, Yugoslav partisan leader Tito signs an agreement permitting “temporary entry of Soviet troops into Yugoslav territory.”

On April 11, 1961, Bob Dylan plays his first major gig in New York City, opening for bluesman John Lee Hooker at Gerde’s Folk City.

On April 11, 1970, Apollo 13, the third lunar landing mission, is successfully launched from Cape Canaveral, Florida, carrying astronauts James A. Lovell, John L. Swigert and Fred W. Haise. The spacecraft’s destination was the Fra Mauro highlands of the moon, where the astronauts were to explore the Imbrium Basin and conduct geological experiments. After an oxygen tank exploded on the evening of April 13, however, the new mission objective became to get the Apollo 13 crew home alive.

On April 11, 1979, Ugandan dictator Idi Amin flees the Ugandan capital of Kampala as Tanzanian troops and forces of the Uganda National Liberation Front close in. Two days later, Kampala fell and a coalition government of former exiles took power.

On April 11, 2004, Phil Mickelson wins the Masters Golf Tournament at Augusta National Golf Club, his first major championship in nearly 12 years as a professional golfer.

For the first time in over 50 years, the presidents of the United States and Cuba meet on April 11, 2015. Barack Obama and Raúl Castro, President of Cuba and brother of Fidel Castro, with whom the United States broke off diplomatic contact in 1961, shook hands and expressed a willingness to put one of the world’s highest-profile diplomatic feuds in the past.