Final answer:
The histories of the two superpowers, the USA and Russia, significantly influenced their outlooks, goals, and fears about the postwar world.
Step-by-step explanation:
The histories of the two superpowers, the USA and Russia, had a significant impact on their outlooks, goals, and fears about the postwar world.
a) The USA had a history of isolationism, which led to a desire for global involvement. On the other hand, Russia had a history of expansionism, which shaped its territorial ambitions.
b) Both superpowers had a history of colonialism, which led to conflicts over control of overseas territories.
c) The USA's history of authoritarian rule influenced its approach to international diplomacy. Conversely, Russia's history of democracy shaped its foreign policy.