How did the Spanish-American War impact America's economy? A. Expanding territories cost Americans too much money. B. Fighting the war put the United States into debt. C. Gaining new territories expanded trade opportunities. D. Supporting Cuba hurt trade with other countries.

C. Gaining new territories expanded trade opportunities.

Explanation:

According to information found on the state department (Office of the Historian) website about The Spanish-American War, of 1898, it was mentioned that,

"the war enabled the United States to establish its predominance in the Caribbean region and to pursue its strategic and economic interests in Asia."

These new territories included countries and islands like Cuba, Guam, Puerto Rico, the Philippines brought new trade opportunities for the United States.