If you are talking about the famous Egyptian slaves, it has been proved that they were not slaves but free people. If, however, you are talking of 1600s onwards, people were too lazy to do the work themselves, because life was hard in those days and work was also hard. These people took people as slaves to do the work for them. Solve your question?
The whole slavery thing was for economic reasons. some needed slaves to work on their plantation, some needed slaves to work at home as servants, and other needed slaves to serve in armies. Remember slaves were an unpaid labor force.
Slaves
They needed slaves to work on the big plantations.
slaves had a master because they needed them were there was good quality soil for large plantations
asslicking
SLAVES AND SUGAR PLANTATIONS Slaves were needed to harvest the crops in the sugar plantations. They were needed for affordable labor, but only because they were also producers of children, who became new slaves. So in addition to revenue from cotton and sugar, the slaveowners also received revenue from the sale of slaves, especially after the importation of new slaves was prohibited.
Slaves were the free labor that the farmers needed to harvest the cotton>
slaves were sold because the whites needed servant's to do there work
They needed slaves to work on their plantations.
slaves
They needed slaves to work on plantations
Nobody actually needed slaves, but some people did profit from slave labor, which is the cheapest kind. Slaves were extensively used to grow cotton in the American south. In the Caribbean, they were used for the sugar crop.