I would say plate movement caused it partially however flooding may also have helped
Answer:
Normal faults form when the hanging wall drops down. The forces that create normal faults are pulling the sides apart, or extensional.
Reverse faults form when the hanging wall moves up. The forces creating reverse faults are compression, pushing the sides together.
Trans current or Strike-slip faults have walls that move sideways, not up or down.
Explanation:
The Rift Valley was formed by violent subterranean forces that tore apart the earth's crust.
Ya it is real because we are living in a same planet every thing is linked with each other. it was the great hypothesis of the world one does pollution and all of us have to face it .
Id say the northern region because i was born in Pittsburgh and there is a lot of Italian and African influence