D is the answer ( for cutting off our trade with parts of the world )
Answer:
College Board, Advanced Placement, AP, AP Central, and the acorn logo are ... movement fostered political change in the United States ... “During the mid-1800s there was a great divide in the U.S. This divide was between ... meant that progressive reform had no impact, but that is not the case because later it would be.
Explanation:
I don’t think so, look somewhere else
The Soviet Union didn't fall until 1991.