What argument did Scott use to sue for his freedom?

In 1846, after laboring and saving for years, the Scotts sought to buy their freedom from Sanford, but she refused. Dred Scott then sued Sanford in a state court, arguing that he was legally free because he and his family had lived in a territory where slavery was banned.

Explanation:

necessary and proper clause. the congress shall have power to all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this constitution in the government of the united states, or in any department or officer thereof.

codfish influenced the yankee trade because they traded it with the americans and the americans traded livestock, molasses and stuff that they can make clothes out of (like wool, and leather). they also could make weapons to.