Evaluate the extent to which Polk's declaration was caused by events beyond his control

a big wall across the mexican border so no drugs, terrorist, or illegal immigrants can come through : )    

it granted civil rights to african americans.

they bring people together to achieve control of the government

basically choosinng what sets in   congress and presdicny this is to keepthe antion hole and so it can last because wiht out authority it wouldnt last a week