What railroad for which Oakes Ames is credit as being the single most important influence in building was caught up in the  Crédit Mobilier scandal?
Oakes Ames Oakes Ames (January 10, 1804 – May 8, 1873) was an American manufacturer, capitalist, and member of the United States House of Representatives from Massachusetts. As a congressman, he is credited by many historians as being the single most important influence in the building of the Union Pacific portion of the transcontinental railroad. He is also noted for the subsequent scandal that alleged the improper sale of stock of the railroad's construction company.
Mississippi and Tennessee Railroad The Mississippi and Tennessee Railroad was an American railroad constructed in the 1850s, connecting Memphis, Tennessee with Grenada, Mississippi. In Grenada, the line connected with the Mississippi Central Railroad.