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
the caste system exists because India isnt as far developed and as far along as america and other countries, therefore if it were to be demolished India would go into a state of panic. the caste system is what makes up india.