Answer:
indentured servant. A person under contract to work for another person for a definite period of time, usually without pay but in exchange for free passage to a new country.
Slaves were generated in many ways. Probably the most frequent was capture in war, either by design, as a form of incentive to warriors, or as an accidental by-product, as a way of disposing of enemy troops or civilians. Others were kidnapped on slave-raiding or piracy expeditions. Many slaves were the offspring of slaves
