How did the addition of new roads change the trucking industry?

Answer: B — Transformed it into a nationwide carriage service

The addition of new roads significantly transformed the trucking industry by facilitating the establishment of a nationwide carriage service. With more roads available, trucking companies gained access to a wider range of locations, enabling them to transport goods across longer distances more efficiently. This expansion not only connected urban centers but also rural areas, allowing for an integrated supply chain across the entire country. The development of an extensive road network led to increased competition among carriers, which further improved service levels and reduced shipping times. As a result, businesses increasingly preferred trucking for freight transport due to its flexibility and efficiency. This evolution empowered trucking to become a primary mode of cargo transport in the U.S., profoundly impacting logistics and distribution systems nationwide.