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Which phenomenon in the late 19th and early 20th centuries contributed to a change in the data on this map?
A. The regulation of railroads
B. Temperance
C. The formation of labor unions
D. Lynching​


Which Phenomenon In The Late 19th And Early 20th Centuries Contributed To A Change In The Data On This Map A The Regulation Of Railroads B Temperance C The Form class=