The main reason why a severe downturn in oil prices during the early '80s was detrimental to the Soviet economy is because Russia was one of the world's leading exporters of oil in the world--meaning that when prices dropped, so did their GDP.
Glasnost (openness) and Perestroika were the policies adopted by Mikhail
Gorbachev (answer C.) to save the Soviet economy- Gorbachev received Nobel Peace Prize for this.
The answer is D, having to fight a two-front war.
The Schlieffen plan was the German strategy to quickly take out France so that they could focus all their troops on Russia.
Its a small european mussel that clusters densely on surfaces.
It's better if you help US out by putting what choices you have to choose from. (A,B,C,D)
