16, 1810 — a call to action by priest Miguel Hidalgo y Costilla to fight for Mexico’s independence from Spain, according to ...

Although a movement toward Mexican independence had already been in progress since Napoleon's conquest of Spain, Hidalgo's passionate declaration was a swift, unpremeditated decision. "Mexicanos, Viva ...

Worth, during the Mexican-American War.1855. Library of Congress. In 1844, President James K. Polk ran on a Democratic platform that supported manifest destiny, the idea that Americans were ...