The conclusion that can be determined from this map was that the spread of communism into eastern Asia set the stage for the Korean War.
What is the Korean War?
The Korean War was a proxy war in the major conflict known as Cold War that confronted the Eastern bloc of communist countries leaded by the URSS and the Western bloc of capitalist countries headed by the US.
Hence, the conclusion that can be determined from this map was that the spread of communism into eastern Asia set the stage for the Korean War.
Therefore, the Option B is correct.
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