Indentured servitude

Indentured servitude is a form of unpaid labor that's similar to slavery but last for a set period of time instead of for life. In practice, many indentured servants died before their term of servitude ended. After the British Empire abolished chattel slavery, it replaced African slavery with indentured servitude of Indians. Between the 1830s and 1910s, 20 million people left India, mostly as indentured servants.