which of the following occurred after the berlin wall fell?\neurope remained divided among ideological…

which of the following occurred after the berlin wall fell?\neurope remained divided among ideological lines.\nthe european union collapsed.\nall european nations became members of nato.\nmuch of europe formed a single economic market.
Answer
Brief Explanations:
After the fall of the Berlin Wall in 1989, the process of European integration advanced. The idea of a single - market became more prominent as barriers came down. Europe was moving towards more unity rather than remaining divided ideologically. The European Union did not collapse; in fact, it expanded and deepened its integration later. Not all European nations became members of NATO.
Answer:
Much of Europe formed a single economic market.