The answer is D, Setting prices for key war materials such as steel, iron, and rubber. I hope this helps!
<span>The Industrial Revolution was the transition to new manufacturing processes
in the period from about 1760 to sometime between 1820 and 1840.</span>
In the United States, the first successful well drilled especially to produce oil,
was drilled at a site near Titusville, Pennsylvania, in August, 1859 .
As you can see, oil was not a part of the industrial revolution. There was no
oil industry, and no overlap between the two.
The industrial revolution was accomplished without oil.
The farming market dried up
According to Du Bois, they fought for democracy. They showed that even though their country has many issues and does not treat them equally, they fought because they believe in democratic principles.