Tennessee became the 16th state to join the United States of America.
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Kentucky became the 15th state to join the United States of America.
642 million people voted in India's general election, setting the record for the world’s largest election.
Charles II of England and Louis XIV of France signed the Secret Treaty of Dover.
The Philadelphia Zoo opened. At the time, it was the only zoo in the 'New World.'
CNN made its debut as the first 24-hour news channel.
