What are six things congress cannot do according to the constitution

Tax exports
Expost facto laws (Congress cannot make a law and then charge somebody who already did it in the past).
Writ of habeas corpus (Congress cannot arrest and charge someone without evidence of said crime).
Bill of Attainder (Congress cannot jail someone without a trail).
Grant titles of nobility.
Make laws against the Bill of Rights.
Cannot favor states.
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The congress completes the diagram

The mercantilism option