Question

Why was president Polk willing to go to war with Mexico

Answer 1

(this is NOT my answer but i found it) on google U.S. annexation of Texas in 1845 sparked the conflict. Mexico viewed Texas as a breakaway province and refused to recognize its 1836 secession. When Polk ordered forces south to the Rio Grande, entering territory claimed by Mexico, the Mexican army attacked them, justifying to Polk the need to go to war.

Step-by-step explanation:

Answer 2

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.