Which are ways america farming changed in the late 1800s?

Explanation:During the late 1800s new ways of American farming improved thanks to the development in farm technology and machinery. An example was the replacement of the horse power which was used to plough the land by the steam tractor (option d) that allowed farmers to introduce a great variety of crops and wheats (option c).

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.