Why might the Grange movement have limited appeal in the United States?

It only represent farmers.

Explanation:

The Grange movement mainly focus on improving the quality of Farmer's life due to the exploitation that was made by the people in railroad industry;. The movement advocated for the reduction in railroad cost that was deemed as too expensive for farmers to be able to distribute their products. They wanted the government to impose stricter regulations on Railroad industries.

But, since farmers are the only group that they often talk about, many people didn't feel represented in the movement. Some of the poor workers from mining and railroad industries even felt attacked. As a result , the Grange movement had a very limited appeal in United States.

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d: their own individual powers within the new goverment