By 1989, the Soviet Union was:A.At war with the United StatesB.Collapsing in EuropeC.Gaining power in EuropeD.Restoring Communism

By 1989, the Soviet Union was B. Collapsing in Europe.

Here's a brief explanation:

The late 1980s were a period of significant change in the Soviet Union. Under the leadership of Mikhail Gorbachev, the Soviet Union introduced policies of "glasnost" (openness) and "perestroika" (restructuring) in an attempt to modernize Communism and make the Soviet economy more competitive.

However, these policies also led to a rise in nationalist and separatist movements in the various republics that made up the Soviet Union. In Eastern Europe, the Soviet Union's control was also weakening, with countries like Poland, Hungary, and East Germany beginning to move away from Soviet influence.

By 1989, these factors were leading to a significant weakening of the Soviet Union's power, both within its own borders and in Europe more broadly. This process eventually led to the dissolution of the Soviet Union in 1991.