Which part of the Constitution was at issue in the nullification crisis?

the supremacy clause
the elastic clause
the necessary an proper clause
the interstate commerce clause

I really don't know which one because I don't really understand the question but I'm thinking that its A..... Please help someone and explain to me what the right answer is and why!!! Please!?!?!?

4 answers

http://www.u-s-history.com/pages/h333.html

The issue was whether a state had to obey a national law that it did not like, as you can see from the article above. What was supreme, a state's rights or the national government acting in the interests of the entire nation? The Constitution seems to be clear on the subject.

http://legal-dictionary.thefreedictionary.com/Supremacy+Clause
I googled the nullification crisis and the supremacy clause. Yes, A is the right answer. You'll find good explanations if you research each of these terms separately.
Thank you both so much!!
You're welcome.