The answer is D American colonists could not settle west of the appalachian mountains
I'm pretty sure its C since immigrants are known as hard workers and contributed a lot to the Industrial Revolution. :) Hope this helps!
The development of railroads was one of the most important phenomena of the Industrial Revolution. Trains provided supplies and equipment and a lifeline of the army. Trains made a big impact on the citizens. Railroads were visible symbols of industry and modernity during the Civil War.
Answer: white people love them
Explanation:
