Answer:
1. So that the US could buy the land for Louisiana
2. It means that the state must do what the people want the state to do and not the opposite
3. (Not very sure about this one) People were divided I'm whether or not it should be passed and if it was legal/followed the constitution, dividing the Americans for the first time.
Step-by-step explanation:
I am not sure if 3 is right at all