Answer:
A. c. and B. are the answers
Answer:
The Bombing Of Pearl Harbor
Explanation:
In 1941 isolationism was put mainly to a stop when japan bombed pearl harbor. Many Americans felt outraged and angry, many activists for isolationism now supported the war effort like Charles Lindbergh.
(I studied this topic for NHD)
Fairly sure the answer is: It allowed people to buy and sell goods in a wider market.
Think about it: without coins, people had to barter with mostly short-term goods, but coins held value over time and most people would accept it as payment. However, if you had to use, say, carrots, the guy you're trying to buy lettuce from may not need/want carrots, but he can use those coins to buy what he DOES need.
Hope I helped!