Describe one u.s. policy and one soviet policy that contributed to the fall of the soviet union and european communism in the early 1990s. what type of impact did the two policies have? why?

The economic system of Soviet Communism was not sustainable; the question was not if it would fail but how and when. By trying to coerce people into working instead of giving them the incentive of working for higher incomes, the USSR handicapped its own economic productivity substantially.But there were definitely policy decisions along the way that triggered the final collapse.One US policy that was very important was a huge surge in US military...

D. phase-contrast microscopy

Explanation:

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http://www.tusculum.edu/faculty/home/ivanlare/html/microbiology/answer.html#08