The US economy started booming in the 1920s because WWI was just ended/coming to a close and all of the money that was spent on war supplies made companies and workers richer as well the war debt and damage of our alies needing supplies that we gave giving us even more money and prosperity.
Answer:
The red lines depicting railroads. The wood and coal showing utilized forests and coal mines
Explanation:
Source: That picture
827,000 Sq Miles know as the Louisiana Purchase in 1803.
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