Anthemius Becomes Western Roman Emperor
Anthemius was proclaimed Western Roman Emperor with the support of the Eastern Emperor Leo I. His reign represented one of the last attempts to restore Western Roman power.
April 12 marks the anniversary of the first shots of the Civil War, the first human in space, and the Space Shuttle era.
Anthemius was proclaimed Western Roman Emperor with the support of the Eastern Emperor Leo I. His reign represented one of the last attempts to restore Western Roman power.
King James I adopted the first version of the Union Jack as the flag of Great Britain, combining the English St. George's Cross with the Scottish St. Andrew's Cross.
Confederate forces opened fire on Fort Sumter in Charleston Harbor, South Carolina. The bombardment marked the beginning of the American Civil War, which would last four years.

President Roosevelt died of a cerebral hemorrhage at Warm Springs, Georgia, at age 63. Vice President Harry Truman was sworn in as the 33rd President.

Soviet cosmonaut Yuri Gagarin became the first human to journey into outer space, orbiting the Earth once aboard Vostok 1. The flight lasted 108 minutes and made Gagarin a global hero.

The Space Shuttle Columbia launched from Kennedy Space Center on mission STS-1 with astronauts John Young and Robert Crippen. It was the first orbital test flight of the shuttle program.
Euro Disney, later renamed Disneyland Paris, opened to the public in Marne-la-Vallee, France. It became the most visited theme park in Europe.