D.,
A, B, and C have the solution of the system of Equations (2,1) But D has a solution of (1,2).
Answer:
Gorbachev's decision to loosen the Soviet yoke on the countries of Eastern Europe created an independent, democratic momentum that led to the collapse of the Berlin Wall in November 1989, and then the overthrow of Communist rule throughout Eastern Europe.
Explanation:
<span>Nationalism is an extreme form of patriotism and loyalty to one’s country. Nationalists place the interests of their own country above the interests of other countries. Nationalism was prevalent in early 20th century Europe and was a significant cause of World War I. Most pre-war Europeans believed in the cultural, economic and military supremacy of their nation. </span>
The answer to this question is a
The answer is answer choice A