Explanation:
The Berlin tragedy is no longer a problem because the wall was taken down, and families were able to reunite and have their families together again.
If you're wanting a single answer then I would say B
I feel like it would be B, because that makes the most sense.
Roosevelt Corollary to the Monroe Doctrine Good Neighbor Policy was the policy that establishes the right of the United States to act as a policeman in the western Hemisphere. Roosevelt Corollary to the Monroe Doctrine Good Neighbor Policy was the policy that establishes the right of the United States to act as a policeman in the western Hemisphere. The Monroe Doctrine created in 1823 was a passive policy, but by the 20th century the United States of America became more confident to act as a policeman for all the Latin American countries.In the 1900's the crisis between Venezuela and its creditors went to such a point that President Roosevelt became concerned that Venezuela could be a soft target for European Invasion. this led to stricter Monroe Doctrine.