What was the connection between slaves and the economy?

many felt slaves were a property of the wealthy.
some felt cotton production could not be maintained without slave labor.
slaves were bought and sold in the market economy.
slaves earned a large profit in the economy.

B. Some felt cotton production could not be maintained without slave labor.

The owner of the slaves rarely did work and paid the slaves hardly nothing or nothing at all, because well of course they were slaves. Although slaves were sold, cotton was the main profit . Cotton made a great profit while slaves did not. That is the connection between slaves and the economy.

the world may never know

the answer for 3 is b and the answer for 4 is d