<em>A. A measure that allowed the U.S. government to intervene in Cuban affairs.</em>
Explanation:
The Platt Amendment was made in 1901 and had it so all treaties that were brought to Cuba had to be approved by the United States.
The United States could now intervene in Cuban affairs whenever they wanted, they wanted to protect certain interests that were on Cuba and protect the Cuban independence. The United States could also now lease or even buy certain parts of Cuban land for naval bases or even coaling stations to power certain things.
Many Cubans actually approved of the Platt Amendment, as many felt more protected and safer.
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Soldiers from Thebes, Sparta's ally, tried to seize control of a town called Potidea. Caught and imprisoned, the townspeople put all 200 members of the advanced party to death. A messenger was sent to try and stop the kiling but by time the war had already started