the collapse of the ussr had a strong negative effect on which of the following nations?\ncuba\nthe united…

Brief Explanations:

The USSR provided significant economic and political support to Cuba. When the USSR collapsed, Cuba lost this crucial aid, leading to an economic crisis known as the "Special Period." The United States benefited from the end of the Cold - War rivalry. Germany was in the process of reunification and its situation was more related to internal and European - wide changes. Montenegro, as a part of Yugoslavia at the time, was more affected by the breakup of Yugoslavia rather than the Soviet collapse directly.

Answer:

A. Cuba