Atlanta was founded as a transportation hub at the intersection of two railroad lines in 1837. After being mostly destroyed during the Civil War, the city rose from its ashes to become a national center of commerce and the unofficial capital of the South. During the 1960s, Atlanta became a major organizing center of the civil rights movement, its leaders, and many other locals playing major roles. In the decades following, the city earned a reputation as being an economic beacon of the south, due to its vast manufacturing district and robust population. During the modern era, Atlanta has attained international prominence as a major air transportation hub, with Hartsfield–Jackson Atlanta International Airport being the world's busiest airport by passenger traffic since 1998.