Rail transport in Argentina served by train, departing from Constitucion, Once and Retiro terminus located in the centre of Buenos Aires. Some cities currently are: Mar del Plata, Rosario (both stations, Norte and Sur, Córdoba, General Pico, Santa Rosa, Rufino and San Miguel de Tucumán. Other regional services are operated by their respectives Provinces, such as Tren a las Nubes (operated by the Government of Salta) and Servicios Ferroviarios Patagónico (also known as "Tren Patagónico") by the Río Negro Province. Buenos Aires Córdoba Entre Ríos Misiones Patagonia Rosario Salta Tierra del Fuego There are several private freight operators in Argentina, along with the state-owned
Pact of San José de Flores in Buenos Aires (rather than in the capital, Paraná). The Buenos Aires government also enjoyed numerous alliances in the hinterland, including that of Santiago del Estero Province (led by Manuel Taboada), as well as among powerful Liberal Party governors in Salta, Corrientes, Tucumán and San Juan. The 1858 assassination of San Juan's Federalist governor, Nazario Benavídez, by Liberals inflamed tensions between the Confederation and the State of Buenos Aires. Relations deteriorated further with the signing of a free trade agreement between the Port of Rosario (the chief Confederate port) and the Port of Montevideo to the detriment of Buenos Aires.