Northern Somalia declared its independence, becoming the unrecognized de facto Republic of Somaliland.
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The Crusaders lost control of the city of Acre, the Kingdom of Jerusalem's last bastion, after a fourteen-day siege.
The US Congress passed Selective Service Act.
Apollo 10 was launched from the John F. Kennedy Space Center on a mission to the Moon.
India had their first successful nuclear bomb test.
The Worms massacre began.
