It established selective service draft of young men in the US is the US escalate its own efforts to win the Vietnam War in the late 1960s.
<h3>What was the Vietnam War?</h3>
Vietnam War is taken place at the time of independence against the French colonial rule, which evolve in the Cold War. The Vietnam War was fought between the North Vietnam and its allies in South Vietnam, which is also called Viet Cong.
Thus, option B is correct.
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