Final answer:
The collapse of the USSR had a negative effect on Cuba, Germany, and Montenegro due to economic consequences.
Step-by-step explanation:
The collapse of the USSR had a strong negative effect on Cuba, Germany, and Montenegro.
In the case of Cuba, the end of Soviet support resulted in an economic crisis known as the 'Special Period'.
In Germany, the reunification process was made more challenging due to economic burdens imposed by the collapse of the USSR and the Soviet bloc.
Montenegro suffered economic consequences as it was part of the former Socialist Federal Republic of Yugoslavia, which was also impacted by the collapse of the USSR.
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