Abolitionists ended slavery
Answer:
b. John C. Calhoun.
Explanation:
The South Carolina Exposition and Protest, known as Calhoun's Exposition, was written in December 1828 by John C. Calhoun,
Calhoun was Vice President of the United States at the time when John Quincy Adams and Jackson were in turn .
This document, also known as Calhoun Exposition,
exposes Calhoun's doctrine of nullification and sets out the idea that a state has the right to reject federal law. It exposes the reasons for doing that and under which conditions.
Thus, any state has a legitimate right to set aside or strike down any federal law that that state has found to regard as unconstitutional with respect to the Constitution of the United States.
Answer:
c) railroads had to charge everyone the same prices
