A plateau formed by a volcanic eruption
Answer:
There are two reasons: at higher altitudes, there is less air pushing down from above, and gravity is weaker farther from Earth's center. So at higher altitudes, air molecules can spread out more, and air density decreases
The USA generally tried to remain neutral during the beginning of world War 1. therefore, i think the correct answer would be C, to remain military and politically neutral. hope this helps you
