Answer:
C.irrigation is often necessary for farming in dry areas is answer.
Explanation:
I hope it's helpful!
The middle class disappeared.
Opportunities increased for the lower classes.
A new class of wealthy citizens emerged.
<span>Many members of the upper classes lost their fortunes</span>
Oklahoma is the nation's<span> third-</span>largest producer of<span> natural gas, fifth-</span>largest producer of<span> crude oil, and has the second-greatest number of active drilling</span>
True because it would be made mostly of steel and at the time this was the easiest way to get steel.
