Which three factors led to the civil war? 17pts

i just took the test on Plato and it is indeed the 1 ,2 , and 5 answers. I hope this help .

worcester v. georgia, legal case in which the u.s. supreme court on march 3, 1832, held (5–1) that the states did not have the right to impose regulations on native american land. andrew jackson refused to enforce the ruling, the decision form the basis for most subsequent indian law in the united states.