Answer:
Because they need to watch over the south to make sure they were filling the new laws and to keep slaves free.
Zoning is basically a determinant of where things such as building and parks and houses will go. A zoning board decides if a certain structure, public or private will be in the best interests of the city or not.
The State of the Union, though valuable, is not completely necessary. Choose D.
I think its letter B but im not 100% sure of it
