The map above confirms that during the Cold War

We can conclude two things:

German borders were significantly changed during WW2.

Major political nations were divided into two political blocks.

Explanation:

First option (A)  is not correct as we can see that they were part of different alliances. France is colored with blued, and Soviet Union (Russia) with red color.

Option B is correct as Germany as we can see is divided. One part of its territory is red, the other is blue.

Option C is not correct as we cannot see what was the stance of United States. Although we know from historical facts that Western countries were close with United States.

Option D is correct as we can see the division between Eastern and Western Europe.

google it and it will pop up