sentences:  Chronic economic mismanagement, political corruption and internal conflicts have led to long-term under-investment of infrastructure.Rail transportation is provided by the Congo Railroad Company (Société Nationale des Chemins de Fer du Congo) and the Office National des Transports (Congo) (ONATRA) and the Office of the Uele Railways (Office des Chemins de fer des Ueles, CFU).Like much of the infrastructure in the Congo, the railways are poorly maintained, dirty, crowded and dangerous.