The building of the railroads impacted the economy and new business practices in the late 1800's. which of these is not one of those impacts?

a. new industries emerged , such as lumber, coal and steel
b. they created reasonable scheduling expectations
c. cities grew in the west and became shipping centers
d. they formed corporations and issued stock bonds

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The economic boom that occurred at the end of the 19th century, due to the railways, promoted the strengthening of the wood, coal and steel industries. In addition, it ensured the development of the exporting cities of the west and, finally, made possible the formation of a programmatic understanding of exports and imports.

D. They formed corporations and issued stock bonds