The best answer would be B. :)
Absolute Monarchies, which was your typical medieval government, run on the idea that one man has absolute power, thus the name.
The formation of NATO and the Warsaw Pact were similar in that they ("<span>B) called for collective security against outside threats," since this was during the Cold War, with NATO being an alliance of western, mostly capitalist states, and the Warsaw Pact representing the Soviet Sphere in the East. </span>
The battle between the Merrimack and the Monitor showed that
(D) the North and South were equally matched at sea.
The Quartering Act of 1765