Answer:
Option: A. By taking control of territories.
Step-by-step explanation:
The United States has always been engaged in helping other colonies gaining independence. The United States helped Cuba to get independence which led to the Spanish-American War. With the assistance of Cuban Revolutionaries, America decided to help to gain freedom from Spain. After fighting the Spanish military in Cuba, the US emerged victorious as a new world power with a stake in international politics. During this period, the United States gained possession of the Philippines, Puerto Rico, and Guam. It was the first time, American got involved in overseas imperialism.