The tomb of a goldsmith family dating back 3,500 years was discovered near Luxor, Egypt.
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Grace Hopper fell victim to the first-ever computer bug after removing a moth from her Harvard Mark II computer.
California became the 31st state to join the United States of America.
Congress changed the official name from United Colonies to the United States of America.
John Lennon released his second album, 'Imagine.'
Queen Elizabeth II became Great Britain's longest-reigning monarch in history.