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James K. Polk

Clockwise from top left: John Quincy Adams, William Henry Harrison, James K. Polk, Abraham Lincoln, Jimmy Carter, Herbert Hoover, James A. Garfield and Ulysses S. Grant

One Was a Teenage Diplomat. Another Was a Nuclear Engineer. Here’s How Eight Presidents Made Their Mark Outside of the White House

From Abraham Lincoln’s patent to James A. Garfield’s geometry proof, learn how these 19th- and 20th-century commanders in chief shaped their legacies beyond politics

'Hanging of the San Patricios following the Battle of Chapultepec' by Samuel E. Chamberlain depicts a multiple execution in the aftermath of one of the battles of the Mexican-American War.

During the Mexican-American War, Irish-Americans Fought for Mexico in the ‘Saint Patrick’s Battalion’

Anti-Catholic sentiment in the States gave men like John Riley little reason to continue to pay allegiance to the stars and stripes