USA HISTORY

Detailed explanation-1: -Pres. James K. Polk oversaw a large territorial expansion of the United States. He advocated for annexation of Texas and aggressively prosecuted the resulting Mexican-American War, which added much of the Southwest and California to the country’s territory.

Detailed explanation-2: -Polk is chiefly known for extending the territory of the United States through the Mexican–American War; during his presidency, the United States expanded significantly with the annexation of the Republic of Texas, the Oregon Territory, and the Mexican Cession following American victory in the Mexican–American War.

Detailed explanation-3: -James Knox Polk was the 11th president of the United States of America (1845-1849). As President he oversaw the largest territorial expansion in American history-over a million square miles of land-acquired through a treaty with England and war with Mexico.

Detailed explanation-4: -Often referred to as the first “dark horse” President, James K. Polk was the last of the Jacksonians to sit in the White House, and the last strong President until the Civil War. He was born in Mecklenburg County, North Carolina, in 1795.