What key role does language play in culture building and cultural evolution amongst human communities?

Language and Cultural Evolution

Investigate how human communities proceeded from primal tribal and agrarian communities to global trade and economic interdependence.

What key role does language play in culture building and cultural evolution amongst human communities?

Remember to think of language as communications of all kinds, including math and codes, for example, and how international trade expanded human communications toward a global presence. Do you believe a true global civilization is possible in the future? Why or why not? (see attachment)