Why did the Farmers' Alliance form? A. to discuss political concerns and develop solutions
B. to coordinate the crops grown by farmers in South Carolina
C. because the Grange did not address social concerns
D. Because the Grange did not address economic concerns

A. to discuss political concerns and develop solutions

Explanation:

Farmers' Alliance, an American agrarian movement during the 1870s and '80s that sought to improve the economic conditions for farmers through the creation of cooperatives and political advocacy. The movement was made up of numerous local organizations that coalesced into three large groupings.

4 copper and gold, the california gold rush is why im pretty sure.

c. troops marched forward in close formation against newer, more accurate weapons