They would work in the fields, clean the house, or care for the children
Slave owners would punish them by whipping them.
They would hurt the slaves.
The slave owners bought their slaves at auctions.
The purchased them at slave auctions. Owners that had more slaves than they needed, and those bringing them from Africa would sell them at slave markets.
They bought them at slave markets and also bread them; children of slaves were regarded as slaves.
North Slave owners did pay their slaves, but south slave owners didn't. See the following link.
Ships from Europe would buy slaves from other slave owners in Africa (YES there were slave owners in Africa!) and then transport them into docks in southern states bordering the Atlantic. There owners from the States could buy or trade them.
Because they would get money.
Slave owners wanted slaves because they were able to make money or profits by the work performed by the slave.
There were no northern slaves or slave owners. That is why slaves went north when escaping with the Underground Railroad.
Slaves were prevented from learning how to read or write. Slave owners were freed of punishment for beating their slaves. Slave owners were freed of punishment for murder of their slaves.
Slaves were prevented from learning how to read or write. Slave owners were freed of punishment for beating their slaves. Slave owners were freed of punishment for murder of their slaves.