This is a techincal term for the type of slavery in which people are treated as property are routinely bought and sold and are coerced into working for no pay

If the imperial dynasty had continued to rule china, it is most likely that a) the economy would have improved rather than weakened b) european nations would have gotten more of a foothold in china c) revolutionary groups would not have gained any power in the country d) communism would not have received support among the poor