The president is isolated when his/her decisions are no longer objective due to his place in office.
Irredentism
"Irredentism is any political or popular movement that seeks to claim/reclaim and occupy a land that the movement's members consider to be a "lost" territory from their nation's past. Wikipedia"
The Virginia plan
It established a bicameral house that would legislate on behalf of the states and enforce the federal authority. Prior to that the thirteen states were living like thirteen nation as there was no power granted to the federal government to enforce its action on states.
I think it’s b
Hope this helps
The movement from rural to urban areas