Final answer:
The responsibility for the Cold War lies with both the USA and USSR, as their conflicting ideologies and ambitions for global dominance led to tensions and proxy wars.
Step-by-step explanation:
The responsibility for the Cold War lies with both the United States (USA) and the Soviet Union (USSR). Both countries had conflicting ideologies and ambitions for global dominance, which led to decades of tensions and proxy wars between them. The USA aimed to contain the spread of communism, while the USSR sought to expand its influence and establish communist governments. The Cold War was marked by competitions, such as the arms race and the space race, as well as conflicts in various regions like Europe, Asia, and Latin America.
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