Question 1
How did the Mississippian's food sources change as the culture's population grew?

the constitution of the united states gave congress the absolute authority over immigration laws

b is the answer i am assuming

the national congress's powers over the states were specific and definite: it had the sole power to negotiate treaties, declare war, and make peace. all powers not granted to congress were reserved for state governments. congress had no power to levy taxes, for example.