How did the greek meet the threat of invasion by the persians

The Athenian forces rushed to meet the Persians, and through fierce hand-to-hand combat, forced them to retreat.

sonar maybe? ? i dont know the choices

congress also has implied powers, which derive from the necessary and proper clause of the constitution and permit congress "to make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states.