What correctly completes this sentence?

in mexico city, the surrounding mountains contribute to

a.
earthquakes

b.
crime

c.
air pollution

d.
deforestation

Even before world war ii had ended, it was apparent that the allies would not remain friends in the post-war era. explain what is meant by the term cold war. then describe how the conflict between the superpowers manifested itself in the two following regions: europe and asia.

Somebody save the ! what was greek math and science also medicine

War of 1812 allowed the us to take control of lake erie