Harambe was shot and killed after grabbing a three-year-old boy in his enclosure at the Cincinnati Zoo and Botanical Garden, drawing widespread criticism and inspiring internet memes.
Mathias Rust, a West German aviator, flew his Cessna 172 from Helsinki, Finland, through Soviet air defences, landing illegally near Red Square in Moscow.
Falklands War: The British War Cabinet, which never considered using nuclear weapons in the conflict, ordered that the nuclear depth bombs on British ships return home.
The rise of Neville Chamberlain culminated with his accession as Prime Minister of the United Kingdom, being summoned to Buckingham Palace to "kiss hands".
U.S. president Andrew Jackson signed the Indian Removal Act into law, authorizing him to negotiate with Native Americans for their removal from their ancestral homelands.