Answer:
Welcome
Explanation:
Railroads created time zones, the growth of cities and the first truly national market.
Few advances in American history have been as prominent as the expansion of the railroads. During the early nineteenth century, the desire for technological advancement was ever prevalent. With the invention of the steam locomotive, bright opportunities lied ahead.
The war caused the united states to enter another severe depression
the united states became the most richest powerful nation in the world
<span>The answer would be D. years old</span>