Why was president polk willing to go to war with mexico? to gain new territory in the northwest to further the idea of manifest destiny to protect the united states from a mexican invasion to the republic of texas remain independent

Its B: to further the idea of Manifest Destiny

to further the idea of Manifest Destiny

Explanation:

Manifest Destiny was simply the belief that God has destined the U.S., especially the white Anglo-Saxon race within the U.S., to expand to and rule the North American continent.

This term was used in the the 1840s, especially by James Knox Polk who was the 11th president of the U.S. between 1845 and 1849, as a justification for the war with Mexico.