30 points! ! 2. an effect of the new territory acquired by the us after the mexican-american war was that states disagreed about a. the border between the united states and mexico. b. the fate of the bear flag republic. c. whether slavery should be allowed in mexican territory. 3. which of the following did mexico and the republic of texas continue to fight about in the 1840s? a. the practice of slavery in texas b. the location of the mexico-texas border c. the practice of slavery in mexico 5. why was president polk willing to go to war with mexico? a. to gain new territory in the northwest b. to further the idea of manifest destiny c. to protect the united states from a mexican invasion