Many wealthy nations, including those in western europe, are experiencing
question options:
a decline in population.
a shift toward younger populations.
no change in population.
a population explosion

each played a major role in ending the cold war.

i do not know if this question has options, but a main impact of the federal reserve act of 1913, which created the federal reserve bank, was the international use of the u.s. dollar, which soon became the world's leading currency - particularly during world war i, since many nations around the world asked the united states for money.

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same