Explorer Juan Ponce de León found Florida and claimed it for Spain.
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The Falklands War broke out between Argentina and Britain over the Falkland Islands and lasted ten weeks.
Beethoven performed his first concert 'for his benefit' at Austria's Royal Imperial Court Theatre.
Martin Luther King started his first of many non-violent demonstrations in Birmingham, Alabama, US.
Sixty-six people died in Sverdlovsk, USSR, when a bio-warfare lab accidentally released airborne anthrax.
Albert Einstein visited New York City and lectured on his Theory of Relativity for the first time.