Answer:
No, Congress could not
Explanation: The states had the right to decide if their state would be allowed to have slaves or not because Congress had passed the Fugitive Slave Law which said that if anybody already owned slaves they could keep them but nobody could buy slaves.
A cartel differs from a monopoly in that businesses making the same product agree to limit production. The definition of a cartel is "in economics, a cartel is an agreement between competing firms to control prices or exclude entry of a new competitor in a market."
The mongol leader that is best known as a patron of the arts is Kublai Khan
He was the fifth Khagan of the Mongol empire, leading it from 1260 - 1294. He is the first mongol Khagan who initiate the development of arts within Asian Region