4) Congress can't create laws regarding specific states and their export taxes. 5) Congress can not regulate slave trade. This became irrelevant after the year 1808. 6) Congress can not impose or create direct taxes on something.
Making them slaves to work on their plantations which eventually killed a lot of them.
It called for protection of equal privileges for all countries trading with China and for the support of Chinese territorial and administrative integrity
A. hippies hopes this helps