Both state governments and the federal government have the power to:

A: negotiate treaties.

B: regulate interstate trade.

C: collect taxes.

D: issue state licenses.

both the state government and the federal government have the power to : C. collect taxes Federal government usually provide some basic regulation regardng the taxation, and the states could determine which things that could or could not be used as a tax write off. That why a lot of companies are made in a more tax favorable state such as delaware