Alabama became the 22nd state to join the United States of America.
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The capital city of the Roman Empire, Constantinople, was severely damaged by an earthquake.
Amazon announced its first drone delivery.
The Mariner 2 space probe completed the first-ever flyby of Venus.
After invading Finland, the Soviet Union was kicked out of the League of Nations.
The Dayton Agreement was signed in Paris by leaders of various governments. This ended the conflict in the former Yugoslavia.