Mexican–American War

The United States went to war with Mexico over Texas and the lands to the west. Mexico had almost no navy left, so the US Navy's war was one of blockade, river raids and landings. In the Gulf, Commodores David Conner and Matthew Perry blockaded the coast, sent steamers up the rivers to Tabasco and Tuxpan, and in March 1847 landed General Scott's army of 10,000 men on the beach outside Veracruz in a single day, the largest American amphibious landing until the Second World War. In the Pacific, the navy seized California and then the ports of western Mexico. Mexico gave up half its territory in the Treaty of Guadalupe Hidalgo.