Why was the period of expansion between 1842 and 1853 so significant to the development of the United States? a.) The United States established borders that still exist today
b.) The United States purchased its largest single territory in one act
c.) The United States obtained territory along the Gulf of Mexico
d.) The United States expanded westward for the first time

just like you man, i personally think its either c or d

explanation:

but good luck with the test man

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."