We can not say that this areas are not civilized or to call them backwards. We may call them different. We can take for example the uses of animals in order to expand the commerce of their area. If we research about the use of camels, for example, we could see that it gained an special place within those who wanted to travel through many difficult areas like deserts. So in the case of camels they were not backwards, they used a different method to obtain success
The answer to this question is true.

The Correct choice is C
<u>Demography</u> is the study of human populations and how they grow or decline.
Answer:
negative growth, rapid growth, slow growth and zero growth
Explanation:
Canal irrigation is when people use canals to transport water to places that need to be supplied with water.