Question

why are the deserts mainly located in western or eastern side of the country?​

Answer 1

Answer:

We observe that most of the deserts are on the western sides of the continents in the subtropics. These are the results of the prevailing easterly winds of the tropics, which are the trade winds. The trade winds prevail in the lower portion of the earth’s atmosphere, in the lower section of the troposphere.

These winds become dry when they reach the western sides of the continents, and hence don’t bring any rain with them. As these regions become devoid of moisture, deserts are formed.