Secretary of State George C. Marshall. It gave the European nations American aid to rebuild economies.
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It occurred chiefly due to the economic interventionism of the Japanese government and partly due to the aid and assistance of the U.S. aid to Asia. After World War II, the U.S. established a significant presence in Japan to slow the expansion of Soviet influence in the Pacific.
Answer:
Through a shared culture developed over time
By eliminating state requirements to make it easier to unity.