What is the definition of “interstate commerce”?
commerce between states
commerce between state and federal governments
commerce between steamboat operators
commerce between different parts of the same state

The correct answer is commerce between states.

Interstate commerce is an essential element of American society, as it allows for the exchange of goods and resources between different states. The ability to regulate interstate commerce was a power given to the federal government, more specifically Congress, in the US Constitution. This regulation of trade between each states helped to spark competition and ensure that monopolies did not form. A perfect example of this would be the Supreme Court case of Gibbons vs. Ogden.