Answer:
Marcus Aurelius
Explanation:
He was the last of the Five Good Emperors. He reigned from 161 AD until his death.
Answer:
it happened because of airplanes
Explanation:
two airplanes crash landed by terrorists into both world trade centers
this caused a lot of damage because all the countries traded there
i learned this in school
:p
The world saw a major increase in population, which, along with an increase in living standards, led to the depletion of natural resources. The use of chemicals and fuel in factories resulted in increased air and water pollution and an increased use of fossil fuels.