How does the Constitution guarantee the principle of federalism?

It is based on the principle of federalism, where power is shared between the federal government and state governments.

Explanation:

It is based on the principle of federalism, where power is shared between the federal government and state governments.

Explanation:

A theoretical pillar of the United States Constitution is the idea of checks and balances between the powers and responsibilities of the three branches of American government.

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.