- 1860 - Abraham Lincoln was elected to be the sixteenth president of the United States.
- 1894 - William C. Hooker received a patent for the mousetrap.
- 1903 - Philippe Bunau-Varilla, as Panama's ambassador to the United States, signed the Hay-Bunau-Varilla Treaty. The document granted rights to the United States to build and indefinitely administer the Panama Canal Zone and its defenses.
- 1923 - Jacob Schick was granted a patent for the electric shaver.
- 1952 - The first hydrogen bomb was exploded at Eniwetok Atoll in the Pacific Ocean.

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