Question

Both state governments and the federal government have the power to
negotiate treaties.
regulate interstate trade.
collect taxes.
issue state licenses.

Answer 1

Old question, answering to close

using process of elimination:
- negotiating treaties only applies to the federal government
- regulating interstate trade only applies to the federal government
- issuing state licenses only applies to the state government

both state and federal governments have the power to collect taxes (ex: there's a federal income tax and a state income tax)