The power to establish post offices and post roads is held at which of the levels of government listed below?

Explanation:

appointment of a particular Government servant to a post was erroneous or not ... ability of the candidates under consideration. ... to be followed in such cases will be as given below.

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.

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;