Answer:
He played a key role in helping the Russians with peace talks
Popular sovereignty, or the sovereignty of the peoples' rule, is part of the seven principles, that the authority of a state and its government is created and sustained by the consent of its people, through their elected representatives (Rule by the People), who are the source of all political power.
I do believe it is the Senate.
To have as much government control and regulation to remain in power and make big decisions as a whole.
Martin Luther King die in April 4, 1968.