Answer:
Transportation was the main thing needed
Step-by-step explanation:
During the Industrial Revolution our country grew the most. We grew big in the oil industry, steel industry, automotive industry, and lots more. Our country saw a crazy boom in jobs and seeing people with a higher income became normal. Railroads were a really hard task to build and many people died during the process but we built railroads CROSS COUNTRY to transport goods and services. Keep in mind this was 1790-1870.