Geographical boundaries of the Southwest are so difficult to pin down, in part, because of the variability of both ancient and modern cultures in the region. ... Maize agriculture is one component of a general cultural definition of the Southwest.
Answer:
This one is easy
Explanation:
the Silk Road Legacy
The greatest value of the Silk Road was the exchange of culture. Art, religion, philosophy, technology, language, science, architecture, and every other element of civilization was exchanged along these routes, carried with the commercial goods the merchants traded from country to country.
The answer is: B. United Nations.
