According to the treaty that ended the Spanish-American War, the U.S. would

The United States supported Cuban independence but reserved the right to intervene in Cuban affairs.

Explanation:

Rome began to lose territory after the Pax Romana because its expansive borders faced constant attack. The correct option among all the options that are given in the question is the second option or option "B". I hope that this is the answer that you were looking for and it has actually come to your help.