View Historical Events by Day: What Happened on April 7 in History?

Henry IV, Holy Roman Emperor, submits to Pope Gregory VII at Canossa, seeking absolution.

Frederick I Barbarossa is crowned Holy Roman Emperor by Pope Adrian IV.

Fra Mauro, Venetian cartographer, completes his world map.

A fleet from Spain arrives in St. Augustine, Florida, capturing a British merchant ship.

The French National Convention adopts the Law of 22 Prairial, accelerating the Reign of Terror during the French Revolution.

The Lewis and Clark expedition resumes its journey West, leaving its camp among the Mandan tribe after a harsh winter. More

Map is in the public domain - Wikimedia Commons

Prohibition in the United States ends with the repeal of the 18th Amendment.

Josip Broz (Tito), is named President of Yugoslavia for life. The Federal Republic of Yugoslavia was created in 1945 and Tito became Prime Minister. He became the first president of Yugoslavia in 1953 and successfully led Yugoslavia on its his own path, refusing to join the East European Communist bloc and pursuing his own policies including nonalignment, alliances with countries which were not aligned in the East West conflict.

This date is often cited as the symbolic birth date of the net because the RFC memoranda contain research, proposals and methodologies applicable to internet technology. There is also support for Jan. 1, 1983, as the birth of the net, which was the date, the National Science Foundation’s university network backbone, a precursor to the World Wide Web, became operational utilizing the TCP/IP communication standard. More

Prime Minister Kevin Rudd of Australia formally apologizes to the Indigenous Australians for the Stolen Generations policies.

The G20 summit is held in London to address the global financial crisis.