E is the answer to your question.
Answer:
The answer is A.
Explanation:
I choosed A because of the cotton gin. Slavery was booming in the 1800s and with the creation of the cotton gin. Cotton could be cleaned more quickly. This revolutionized the cotton industry. Now, I am unsure about the sewing machine though.
Answer:
As more railroads were built, it helped to expand the nation and the West Industries cropped up in the West and used the railroads to link industry to markets in the Eastern part of the nation.
The answer is the last one, " Atlantic Ocean to the Pacific Ocean".
