How did Adams influence the future land holdings of the United States?

How did Adams influence the future land holdings of the United States?

a. He proposed a law in Congress to tax English imports at a high rate, generating enough income to buy the Southwest from Spain.
b. He banned political parties, cooling passionate debates so that the nation could focus on expansion.
c. He avoided war with France, sent new negotiators, and created a sense of trust so that the United States could eventually purchase the Louisiana Territory.
d. He gave the U.S. army permission to clear the Native Americans from the land, using violence if necessary.
e. He appeased Britain with tax agreements and U.S. army assistance in the war against France, so
Britain gave the United States the land that is now Montana.

ANSWER
C