The Atlantic Coast Line Railroad (ACL) was a major American railroad that operated primarily in the southeastern United States. Founded in 1900, it connected key cities and regions, facilitating the transport of passengers and freight. The railroad played a significant role in the economic development of the South, linking agricultural areas with urban centers. In 1967, the ACL merged with the Seaboard Air Line Railroad to form the Seaboard Coast Line Railroad. This merger expanded the network and improved services, allowing for more efficient transportation across the region. The legacy of the ACL continues to influence rail transport in the southeastern U.S. today.