Farming in the United States changed in many ways in the late 1800's:
A. <em>The amount of money in circulation increased</em>. Incorrect. Many farmers kept their money or saved it, there was really no circulation happening.
B. <em>Farmers used new equipment</em>. <u>Correct</u>. This is where the use of horses came into play to help plow fields, along with other pieces of equipment that made it easier to farm.
C.<em> Larger farms produced a single crop</em>. <u>Correct</u>. It was less work if a farm just had one crop, so larger farms would usually just pick one that was in high demand.
D. <em>World competition decreased</em>. Incorrect. The world competition did not decrease because of farming. World competition did maybe decrease for the farmers, but not in general.