Explain what it means to be a slave

To have no freedom and you are forced to do things that you do not want to do. You are treated poorly. You are worked to the bone and everything is restricted to you. You are seen as less than. I don't know what country or time period you are specifically asking about but that is what it means to be in slavery.

this means that germany had to pay the allied countries. reparations are/is essentially payment for something that they have done wrong, so after ww1, germany was forced to pay reparations so they could replenish the allied countries resources' that they had lost during the war.

it provided for equal trade rights among nations in china.