East and West Berlin were separated by the "Berlin Wall" during that Cold War that existed between the United States and Soviet Russia, since this was meant to keep people in East Berlin from fleeing to the western half.
After the defeat of Japan in World War II, the United States led the Allies in the occupation and rehabilitation of the Japanese state. Between the years 1945 and 1952, the U.S. occupying forces, led by General Douglas A. MacArthur, enacted widespread military, political, economic, and social reforms.
The answer is trade barrier.
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1)
Several efforts had been made for the past few days by the UN to maintain peace in the region.
For years following the 1967 war,the UN voted over and over in favour of an international peace and conference, under the auspices of the UN, with all parties to the conflict (including the Palestinian Liberation Organization which emerged as a serious force after 1967) to solve the conflict between the Arabs and the Jews.
Although the UN was unable to stop the recent wars, which caused a lot of casualties.
But overall United Nations has been mildly successful in maintaining peace in the region.
2)
Eisenhower coins one of the most famous Cold War phrases when he suggests the fall of French Indochina to the communists could create a “domino” effect in Southeast Asia. The so-called “domino theory” dominated U.S. thinking about Vietnam for the next decade.Eisenhower singled out the Soviet threat in his doctrine by authorizing the commitment of U.S. forces "to secure and protect the territorial integrity and political independence of such nations, requesting such aid against overt armed aggression from any nation controlled by international communism."[2] The phrase "international communism" made the doctrine much broader than simply responding to Soviet military action. A danger that could be linked to communists of any nation could conceivably invoke the doctrine.
3)
McCarthy, a relatively obscure Republican senator from Wisconsin, announced during a speech in Wheeling, West V. that he had in his possession a list of 205 communists who had infiltrated the U.S. State Department. The unsubstantiated declaration, which was little more than a publicity stunt, thrust Senator McCarthy into the national spotlight. Asked to reveal the names on the list, the opportunistic senator named just one official who he determined guilty by association: Owen Lattimore, an expert on Chinese culture and affairs who had advised the State Department. McCarthy described Lattimore as the “top Russian spy” in America.
It reduce the threat of foreign competition for north America
