Mesopotamian civilizations were settling around the Euphrates river because of natural resources such as fresh drinking water and rich soil. This river flooded periodically which they used to their advantage for crops.
Answer:
Hitler.
Explanation:
After the treatment of the Jews by the Germans, they felt a need for their own place and government.
The ground-level ozone is a harmful air pollutant that can be a danger to one's health. It is commonly created by chemical between oxides and nitrogen. Similar to ground-level ozone, smog can also be a danger to one's health, especially to the lungs. It is a mixed smoke and fog.
