In history, what is the star chamber

The Star Chamber was an English court which sat at the royal Palace of Westminster, from the late 15th century to the mid-17th century, and was composed of Privy Counselors and common-law judges, to supplement the judicial activities of the common-law and equity courts in civil and criminal matters.

Explanation:

confederacy: supported slavery, believed states should be able to nullify federal laws, supported low tariffs

union: everything else