why did jefferson believe he has done an act beyond the constitution by purchasing the louisiana territory

Idon't really understand the question. it counts for 20% of my lesson grade and i really need putting the answer into words. anything will . i need asap so im awarding 30 points. a disagreement between states of the united states concerning the rights of states vs. the authority of the national government led to the civil war. state governments were forced by war into a subservient position. what might happen if national governments ceded their authority to a world government by international treaty?

2. what was the dred scott decision about? what do we learn from this supreme court case?

Why is it important that dr. luther king jr. use non-violent protest to create social change?