Cách sử dụng
Slavery is a word that describes a very bad situation where one person owns another person and treats them very badly. This used to happen a lot in history, where people were taken as slaves from one country and forced to work for the people who owned them in another country. It is now illegal in most parts of the world and is considered a violation of human rights. When talking about slavery, it's important to remember that it is a terrible thing that people should never be subjected to.