This Day in History: On this day in 1814, Francis Scott Key wrote “The Star-Spangled Banner,” which later became the national anthem of the United States. Key originally wrote the anthem as a poem entitled “Defence of Fort McHenry” after witnessing the Battle of Fort McHenry in the War of 1812.

“The Star-Spangled Banner” was declared the national anthem by a Congressional resolution on March 3, 1931, which was then signed by President Herbert Hoover.

Explore this timeline for an in-depth look at the events of the War of 1812.
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