What is the author’s main purpose for including this paragraph?

Ethnicity is used to distinguish between groups based on cultural elements, but according to the information presented in the lecture (blank) would encompass the details about a person like the shape of his or her features.

What word means having a variety of cultures in the same area? a. cultural diversity b. culture region c. popular culture d. population density

Why couldn’t other societies utilize horses the same way the mongols could?