Why has the study of history changed over time? O A. Historians have stopped creating historical narratives and focus
more on presenting facts.
O B. Historians have discovered new sources that change their
conclusions about past events.
O C. Oral history has come to replace more formal written forms of
historical narrative.
D. Archaeologists and anthropologists have come to dominate the
discipline of history.

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.

answer: mickey mouse

explanation:

declare war, appoint military officers, sign treaties, make alliances

d.)   when the us left nato after the end of the cold war and they had to evolve to focus on more humanitarian measures with the smaller budget