with the fall of communism, the number of countries in central europe and northern eurasia has

a. decreased significantly.
b. decreased by one.
c. increased by one.
d. increased significantly.

Option D.

After the fall of communism, the numbers of countries in Central Europe and Northern Eurasia has increased significantly.

Explanation:

Along with collapsing of communism, many countries started closing the economic gap between East and west part o Europe. The Revolutions of 1989 resulted in formation of a rebellious wave pattern during late 1980s that ended the rule of communist in the region of Central and Eastern Europe and even beyond. The act of dissolving the Soviet Union caused the addition or formation of new 11 countries in Eurasia.