USA HISTORY

Detailed explanation-1: -James K. Polk – the 11th president of the United States – led the country to its greatest territorial expansion, stretching the U.S. from the Atlantic Ocean to the Pacific. He also oversaw the successful, but controversial, Mexican-American War. James Knox Polk was born in rural North Carolina in 1795.

Detailed explanation-2: -The Annexation of Texas, the Mexican-American War, and the Treaty of Guadalupe-Hidalgo, 1845–1848. During his tenure, U.S. President James K. Polk oversaw the greatest territorial expansion of the United States to date.

Detailed explanation-3: -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-4: -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-5: -Polk had a three-part plan for the war with Mexico: First, American troops would drive Mexican forces out of the disputed border region in Texas and make the border secure. Second, the United States would seize New Mexico and California. Finally, American forces would take Mexico City, the capital of Mexico.