A and D
I mean... Eventually some kings left the Papal authority. However, remember the crusades? It united nearly everyone in Europe. Some to the point of making new states.
I hope I'm right!
A. Isolation allowed china to develop on its own, without too much interference from foreign invasion.
-Enforce laws
-Appoints head of agencies and Federal comissions
-Holds power to veto bills
-Promote diplomacy, sign peace treaties, and sign pardons
-Holds power to declare war