How and why did differences in social classes originate?

The term class first came into wide use in the early 19th century, replacing such terms as rank and order as descriptions of the major hierarchical groupings in society. This usage reflected changes in the structure of western European societies after the industrial and political revolutions of the late 18th century.

answer: the global region is a special region that: encompasses the entire world. has the lowest possible priority.

explanation:

c: haven't lost any yet