Final answer:
Rail travel started to lose its appeal in the early 20th century due to the rise of automobiles, road expansions, and economic struggles in the rail industry.
Step-by-step explanation:
Rail travel began to decline in popularity at the beginning of the 20th century. The expansion of roads, canals, and the invention of automobiles were some of the contributing factors to this decline. Additionally, the financial difficulties faced by rail companies exemplified by events such as the closure of the Philadelphia & Reading Railroad Company in 1893 highlighted the struggles within the industry. Despite the introduction of commuter railways and public transportation innovations like electric streetcars, the rail industry could not sustain its previous dominance as other forms of transport became more prevalent and efficient.