What did president james polk use as grounds for declaring war against mexico?

a. annexation of texas by mexico

b. declaration of the border by mexico.

c. a mexican attack on american forces

d. mexico's nonpayment debts

What makes fort sill historically unique among other regional military installations? a. it is the site where seven major commanders of us military efforts were trained. b. it houses the largest explosive weapons factory in the united states. c. it specializes in training soldiers to preserve the cultural artifacts of nations invaded by the us military. d. it is the oldest functioning installation in oklahoma.