. The Monroe doctrine refers to
a.the economic recovery package of aid from the United States to western Europe after World War II.
b. the policy that the United States will launch a preemptive attack on any country harboring nonstate actors that threaten its national security.
c. the idea that foreign powers should not meddle in the Western Hemisphere.
d. the theory that the United States needed to have twice as many nuclear weapons as the Soviet Union in order to remain secure.
e. the treaty signed at the end of the War of 1812.