Question

Why was it difficult for ethnic groups to mix throughout Central America?

No one group wanted to be dominated by any other.
Repressive governments kept ethnic groups from mixing.
Mountains blocked travel between areas.
Ethnic pride was too strong for mixing to take place.

Answer 1

The correct answer is:  [C]:  "Mountains blocked travel between areas."
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   Note:  "physical barriers". 
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Answer 2

Answer:

Option: Mountains blocked travel between areas.

Explanation:

Central America geographically consists of vast mountains and forest which provide countries with eminence natural resources. The ethnic groups of Central America, include the Mayans, Garifuna, Xinca, Lenca and so on. The ethnic groups find it difficult to mix with people living in the cities and with other ingenious people because of the vast mountains that block them to travel from one place to another. The lack of proper road, continuous landslides, and transportation make moving harsh for the people.