Answer :
The greatest concern of those opposing nullification during the crisis in the 1830s was that South Carolina would become much too powerful and impose slavery on other states.
This was a legitimate concern as it was very bad at the time if a Southern state had so much power.
This was a legitimate concern as it was very bad at the time if a Southern state had so much power.
Answer:
that states would leave the Union and gravely weaken it
Explanation:
a). that John C. Calhoun would become president
b). that states would leave the Union and gravely weaken it
c). that the United States would fail to collect tariffs, causing a financial strain on the economy
d). that South Carolina would become much too powerful and impose slavery on other states