A bill is introduced in the house only

the senate only

either the house or the senate

both the house and the senate​

if you help me on my last question ill help you on this one i promise

Explanation:

if you help me on my last question ill help you on this one i promise

the answer is: the sesquicentennial of the american civil war is an occasion to consider the legacy of that great conflict. this legacy is our inheritance, and despite many indelible features, we continue to negotiate the resolution of that conflict. the civil war was fought over slavery, but not always on behalf of slaves

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.