1661: Treaty of The Hague is signed, whereby the Dutch Republic sells New Holland (Brazil) to Portugal for 63 tons of gold

1890: Murderer William Kemmler becomes the first person executed by electric chair at Auburn Prison in New York

1945: Atomic bomb is dropped on the Japanese city of Hiroshima by the US B-29 Superfortress “Enola Gay”

1965: US President Lyndon B. Johnson signs the Voting Rights Act, prohibiting voting discrimination against minorities

1991: Tim Berners-Lee releases files describing his idea for the World Wide Web and debuts WWW as a publicly available service on the Internet

Source: Onthisday.com