How did the yearly flooding of the Nile River affect the people of Egypt and Kush? a.
It spread diseases that destroyed whole empires.

b.
It spread diseases that destroyed whole empires.

c.
It isolated the settlements.

d.
It left silt that improved the soil.

d

Explanation:

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.