>>17867904 (OP)They did. A majority of the Union Pacific workforce (the railroad working east to west since you are retarded) had a diverse group of Northerners wanting new opportunities, former confederates looking to escape reconstruction, freed blacks, and immigrants from Ireland, Germany, and Norway.
>what about the Western pacific railway hmmmmmmLook at a population density map from 1875 of the west coast vs the east coast and you get your answer. Retard.