Zachary Taylor (1784-1850) served in the army for some four decades, commanding troops in the War of 1812, the Black Hawk War (1832) and the second of the Seminole Wars (1835-1842). He became a full-fledged war hero through his service in the Mexican War, which broke out in 1846 after the U.S. annexation of Texas. Elected president in 1848, Taylor entered the White House at a time when the issue of slavery and its extension into the new western territories (including Texas) had caused a major rift between the North and South. Though a slaveholder, Taylor sought to hold the nation together–a goal he was ready to accomplish by force if necessary–and he clashed with Congress over his desire to admit California to the Union as a free state. In early July 1850, Taylor suddenly fell ill and died; his successor, Millard Fillmore, would prove more sympathetic to the interests of southern slaveholders.