• 451 – Attila the Hun sacks the city of Metz and attacks other cities in Gaul (modern-day France).

• 1724 – The first performance of Johann Sebastian Bach’s St John Passion takes place in Leipzig, Germany.

• 1862 – Union forces under General Ulysses S. Grant defeat Confederate forces at the Battle of Shiloh in Tennessee, during the American Civil War.

• 1927 – The first long-distance public television broadcast takes place from Washington, D.C. to New York City.

• 1948 – The World Health Organization is established as a specialized agency of the United Nations.

• 1994 – The Rwandan genocide begins, with the assassination of Rwandan President Juvénal Habyarimana and Burundian President Cyprien Ntaryamira in a plane crash.

• 1922 – The Teapot Dome scandal begins in the United States, when Secretary of the Interior Albert B. Fall leases oil reserves in Wyoming to private oil companies in exchange for personal bribes

• 1949 – The Rodgers and Hammerstein musical “South Pacific” opens on Broadway in New York City.

• 1964 – IBM introduces the System/360, a revolutionary family of mainframe computers that would dominate the industry for years to come.

• 2018 – American golfer Patrick Reed wins the Masters Tournament at Augusta National Golf Club, defeating fellow golfers Rickie Fowler and Jordan Spieth.