Multiple choice In the 1840’s, President James K. Polk’s belief in Manifest Destiny led to: A ban on the activities of northern abolitionists The establishment of new colonies in the Carribean An alliance with several South American countries A war with Mexico Reveal answer Fill a bubble to check yourself D Correct answer Explanation President James K. Polk was a strong proponent of Manifest Destiny, and his desire to acquire territory like California and New Mexico directly contributed to the tensions that led to the Mexican-American War.