Final answer:
The factors that led to the escalation of the Cold War included political tensions, the arms race, and proxy wars.
Explanation:
The Factors Contributing to the Escalation of the Cold War
Political Tensions: Ideological differences and power competition between the USA and USSR.
Arms Race: Competition in building up nuclear arsenals as a show of strength and deterrence.
Proxy Wars: Conflicts in Korea, Cuba, Vietnam, where the superpowers supported opposing sides.
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