B,Invasion of Korea Japan
The US forces passing the 38th parallel would be your answer.
The system of checks and balances is an important part of the Constitution. With checks and balances, each of the three branches of government can limit the powers of the others. ... Each branch “checks” the power of the other branches to make sure that the power is balanced between them.
The cold war was different from other US wars, because it had multiple wars within the cold war that was fault, & that the US and USSR did not fight each other head on, instead through support. Usually the US fought those that they were attacking head-on instead of just support.
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