In addition to Cuba, American forces successfully seized the Spanish-owned Caribbean colony of...

Puerto Rico

In addition to Cuba, American forces successfully seized the Spanish-owned Caribbean colony of Puerto Rico.

To answer your question, we need to look at the history of American military operations in the Caribbean during the Spanish-American War.

During the late 19th century, Spain had several colonies in the Caribbean, including Cuba, Puerto Rico, and the Philippines. The United States, in efforts to expand its influence and protect its interests in the region, engaged in military operations against Spain.

In addition to Cuba, American forces successfully seized the Spanish-owned Caribbean colony of Puerto Rico.

To arrive at this answer independently, you could consult historical sources, such as books or online articles, that detail the events of the Spanish-American War. These sources would provide a comprehensive overview of the war and its outcomes, including the American military actions in the Caribbean.