The Answers is:
Probably the most important single cause of Byzantine empire collapse was its recurrent debilitating civil war. Three of the worst periods of civil war and internal infighting took place during Byzantine empire decline
Answer: The Selma to Montgomery march was part of a series of civil-rights protests that occurred in 1965 in Alabama, a Southern state with deeply entrenched racist policies.
Explanation:!!!
D looks like the best option
The answer is impeachment .