What is the fedeal government for?

The federal government is composed of three distinct branches: legislative, executive, and judicial, whose powers are vested by the U.S. Constitution in the Congress, the president and the federal courts, respectively. These branches help preserve law and justice mainly, but also may establish and collect taxes,  borrow money on the credit of the United States  Regulate commerce with foreign nations, the states, and Indian tribes , establish laws regulating immigration and naturalization,  and print money (bills and coins)

The federal government limits powers of other parties. They are allowed to make money & print money, declare war on other countries, manage trade and foreign deals between other countries and within the United States.

(Most important to note is that the handle oversea deals and make sure that the United State has money in circulation)***

Hope this hope! Have a great day & don't forget to drink and eat something!!!

if you want to read more use this link

https://bensguide.gpo.gov/apprentice-federal-versus-state-government

what is the question

they supported black codes so the answer is a or b