Question: Which company formally announced in 1894 helped Bridgeport become a major transportation hub in the 1850's?
Sentence (from "Bridgeport Historic District"): Founded in the 1810s as a farming community, Bridgeport became a major transportation hub with the coming of the Nashville and Chattanooga Railroad and Southern Railway in the 1850s, in addition to its Tennessee River port.
Relevant evidence: Yes