Three powers that the states and the federal government have to share are, Trade, commerse, and education

a. Issue a teaching license to someone who has applied and has met all the requirements.

The state is responsible for issuing a teaching license.

b. Make a treaty with a foreign country

The federal Government is responsible for making treaty"s

c. Set health codes for restaurants

The federal Government is responsible for setting health codes for restaurants

d. Issue a marriage license

The state is responsible for issuing a marriage license

e. Declare war

The federal Government.