On this day in History - May 20

1802 – By the Law of 20 May 1802, Napoleon Bonaparte reinstates slavery in the French colonies, revoking its abolition in the French Revolution.

1873 – Levi Strauss and Jacob Davis receive a U.S. patent for blue jeans with copper rivets.

1932 – Amelia Earhart takes off from Newfoundland to begin the world’s first solo nonstop flight across the Atlantic Ocean by a female pilot, landing in Ireland the next day.