Slavery.

Slavery is a social economic system under which certain persons known as slaves are deprived of personal freedom and compelled to perform labour or services. Slavery was a bad thing because people didn't have freedom for them selves. A slave had to do what is asked of him by his master, usually this is work of some kind. Slaves are punished for not following their master's orders, working too slowly, or attempting to runaway. When we think of slavery today we think of the black Africans who were captured, sold into slavery and taken to the Americas to work on the plantations there.