Which of the following completes the diagram above?

A. Division of labor
Incorrect. Steam power is not related to a division of labor.

B. Transcontinental Railroad
Incorrect. Mass production was not a factor in Transcontinental Railroad.

C. Communication
Incorrect. These are not factors in communication.

D. Industrial Revolution
Correct! These are all factors related to the Industrial Revolution.

Which of the following inventors revolutionized the economy of the South by improving the way its cotton was harvested?

A. Eli Whitney
Correct! The cotton gin changed the way that cotton was harvested which changed the economy of the South.

B. Samuel Morse
Incorrect. The invention of the telegraph impacted communication nationwide.

C. Alexander Graham Bell
Incorrect. Bell invented the telephone which increased the speed of communication.

D. Robert Fulton
Incorrect. Fulton invented the steamboat which transformed transportation and trade.

Which of the following best summarizes the information above?

A. It took a long time for railroads to become popular.
Incorrect. Railroads had always been a popular way to travel.

B. New inventions and engineering methods led to waterway construction.
Incorrect. The list includes improvements in roadways.

C. Technological innovations and new technology created new travel options.
Correct! Each of these represents ways that people could travel across land and by water.

D. Transportation was built only by private investments.
Incorrect. The National Road was funded by the government.

Cyprus McCormick’s mechanical reaper changed wheat production by —

A. improving the soil where wheat was grown
Incorrect. The reaper was not invented to change the soil.

B. reducing the amount of labor required for harvesting
Correct! The amount of manual labor was reduced with the invention of the reaper.

C. forcing small farmers out of business
Incorrect. Most small farmers were able to prosper as a result of the reaper.

D. improving the soil where wheat was grown
Incorrect. The reaper was not invented to change the soil.