People who developed innovative farming methods to support large urban populations.
Answer:
it shows that a lot of our higher points like mountains used to be under water. it shows how the earth has change over billions of years
Explanation:
Because there are only about 33 million people living in a huge area of 13,100,000 km2. It is very cold in Siberia and the conditions are not good for people's lives, and therefore the population density is only 2,5 inhabitants per square kilometer.
The Ural mountains create a distinct border between Europe ans Asia.
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C I think hope this helps