Answer:
Shay's rebellion convinced American leaders that little protected them from anarcy
Mikhail Gorbachev's reformist policies in the Soviet Union fuelled opposition movements to the Communist regimes in the Soviet bloc countries. The structures of the Eastern bloc disintegrated with the dissolution of the Warsaw Pact and Comecon. The Soviet Union broke up into independent republics.
I think that the answer is a massive reinvestment in capital industry.
