As a result of World War II, Korea was liberated from Japan and divided in two: Communist North Korea (supported by the Soviet Union), and South Korea (supported by the US).
In 1950, Kim II Sung, the leader of North Korea, invaded South Korea in order to unify both countries under his command. In response to this invasion, President Truman ordered the US forces to aid its ally and reject North Korea advances.
Even when the conflict resulted on military stalemate, the United States proved the ideals of the Truman Doctrine by controlling communist invasion in the context of Cold War.
Answer:
Mexico forms the southern border of the United States .
Explanation:
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Sociologists would call this shift in focus an example of goal displacement. This happens when the original goals of an organization is being replaced with goals that are developed as time passes by. The new goals are much more related to the situation of the present times as compared to the original ones which were planned before everything started.