What were the internal and external forces that led to the collapse of the Soviet Union in 1991. (Chapter 21) Please add the best possible answer in the form of a paragraph. Thank you so so much! Best answer will be awarded brainliest.

One exception to the full faith and credit clause is that one state cannot enforce the civil law of another state is required to recognize marriages and divorces in another state cannot enforce the criminal law of another state is required to enforce the criminal law of another state