Correct. The answer is c. The author’s main point in this section of the chapter is that the United States used political actions, including diplomatic negotiations and war, to gain new land in the West in the 1840s and 1850s, but its acquisition of huge new territories revived and deepened old debates about Native Americans’ sovereignty and the expansion of slavery.
Incorrect. The answer is c. The author’s main point in this section of the chapter is that the United States used political actions, including diplomatic negotiations and war, to gain new land in the West in the 1840s and 1850s, but its acquisition of huge new territories revived and deepened old debates about Native Americans’ sovereignty and the expansion of slavery.