Paragraph 2 supports the idea that Illinois, Indiana, and Wisconsin were able to become the leading wheat-growing states by 1860 in large part because A. by 1860 there were more railroads in Illinois, Indiana, and Wisconsin than in Ohio, Pennsylvania, and New York B. the expansion of east-west rail lines made transporting Midwestern products to East Coast markets relatively fast and easy C. by 1860 states such as Ohio, Pennsylvania, and New York had become more interested in industrial development than in agriculture D. most of the farmers who had grown wheat in Ohio, Pennsylvania, or New York resettled in the Midwest after the expansion of east-west rail lines