What was the difference between an indentured servant and a slave

slaves are treated as the personal assets of their masters unlike servants

slaves are never remunerated for their services while servants are working in exchange for a previously agreed upon amenity, free accomodation or passage to another country.

answer; i believe that the correct answer is (agriculture);

the doctrine of nullification recommended that states living inside the union have the one-sided, inalienable ideal to void any law made by the national government that could be esteemed illegal.

the united states was shaped based on a general agreement among its individual states. hence, it is inferred that under the hypothesis of invalidation, since the states are the establishment of the union, they have the ability to referee and disprove unlawful laws.