We use the term when another cultural group is not willing to talk freely to an anthropologist

The term you might be searching could be 'Ethnocentrism', given when a member of a cultural group believes to own their culture, to have superiority over the rest of cultures. Furthermore, they presuppose to have the exclusive right to judge the norms, traditions and behavior of the other groups. As an anthropologist studies these features of the human race, they are not willing to talk them.

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.