Each city would be ruled by one king
Yes Power is divided between the a national government and state government.
The Federalism is the system of government in which power is divided between a central government and regional governments in the United States, both the national government and the state governments possess a large measure of sovereignty. Hope this helps, good luck.
Slavic and Scandinavian countries are very rich in resources, and Russia wanted to control most trade in Europe until the collapse of the Soviet Union. More trade = More power and they were still recovering after the HARD losses when the Germans' invaded Leningrad and the war.