B. It supported states rights
I believe that it was with the help of B. The Mongols that the Qing dynasty was able to come into power
I would say so so because during the Vietnam war the United States was trying to stay neutral but JFK did sent American troops, supplies, and money but it was a mistake and people did not like that. It was during the 60's when the civil right's movement.
The great rift valley in east Africa is being shaped by water due to erosion