What are the six cities the question asks about
Answer:
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Ight
what you want to talk about
Answer: presidental democracy
Explanation:
This is because the president is head of both state and goverment unlike some other states.
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!