Answer:
D. Americans
Explanation:
The antecedent is a noun that replaces the subject, the thing doing the action.
In the sentence instead of saying americans again it says their.
Because its in the middle or center of the area
<span>I believe the answer is nonmaterial culture
Nonmaterial culture refers to abstract/intangible things that could be used to represent a certain culture.
Examples of nonmaterial culture: Traditional songs from a certain culture, the norms from a certain culture, the roles of each members in a certain culture, etc.</span>
The niles river supported them
The kind of geography that deals with people and how they affect the world is Human Geography.
This branch of Geography approach systematically how humans shape the world they live in considering their spatial distribution on Earth and activities, addressing topics such as cultural geography, political geography, economic geography.
