Which constitutional principle describes the division of powers between the federal and state governments?

The answer is  Federalism.

Explanation:

Federalism is the sharing of power between the different layers of institutions or organizations. It means that both have exclusive power and are in a negotiable relationship. In federalism, there are both national and state-level elections and power is divided between them based on functions of national concern and state-controlled program.

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it was the "4. potsdam" conference that demanded the unconditional surrender of japan, since it was clear that the japanese would continue to find until the very last man otherwise.