Question

As the Cold War came to a close, _____ emerged as the only superpower.
a. Russia
b. the United States
c. the European Union
d. third world countries

Answer 1

As the Cold War came to a close, the "United States" emerged as the only superpower, since previous the US and the USSR had been the main superpowers after WWII.

Answer 2

As the Cold War came to a close, the United States emerged as the only superpower.