Is it true that he government of the US is a federal system in which the many state governments and the single federal government share power.?

Yes, the United States operates under a federal system of government where power is divided between the national (federal) government and individual state governments. This structure allows both levels of government to have their own responsibilities and authorities, as defined by the Constitution. Certain powers are reserved for the federal government, while others are reserved for the states, creating a balance that enables local governance alongside national oversight.