Question: The Salado river flows through the provinces of Santiago and Santa Fe in the north of which country?
Context: The Salado River (Spanish: Río Salado , ] ) is a river in northern Buenos Aires Province, Argentina.  It originates at El Chañar Lake on the border with Santa Fe Province, 40 m above mean sea level, and flows generally southeast for 640 km before debouching into Samborombón Bay, part of the Río de la Plata estuary on the Atlantic Ocean.  The Salado's mouth is about 170 km south of the city of Buenos Aires. Pecos is a village in San Miguel County, New Mexico, United States.  The population was 1,441 at the 2000 census, growing much faster than in other parts of San Miguel County, partly because Pecos is within commuting distance of Santa Fe.  The village is built along the Pecos River, which flows from the north out of the Santa Fe National Forest.  Notable locations nearby include Pecos National Historical Park, Glorieta Pass, Pecos Benedictine Monastery, and Lisboa Springs Trout Hatchery.  It is also an entry point for hunting, fishing, hiking and camping in the Pecos Wilderness.  The closest metropolitan area is the Santa Fe metropolitan area, approximately 26 miles (42 km) to the west. The Paraná Miní River English: Río Paraná Miní ) is an anabranch, or "secondary branch", and tributary of the Paraná River.  It is located in the provinces of Santa Fe and Chaco, Argentina.  In Chaco Province the Paraná Miní receives several relatively small tributaries, including the Tapenagá River, Palometa River, and Salado River (one of many Paraná tributaries named Salado). The Salado River (Spanish: Río Salado , ] "Salty River") is a river that crosses several provinces of Argentina, flowing 1150 km from its source in the Salta Province to end in the Paraná River, in the Santa Fe Province.  Because its origin, its flow varies widely within the year, and it can dry out in some parts of its path during the winter.  The only important tributary to the river is the Horcones River, which is born in Salta as Cajón River, and joins the Salado in the Santiago del Estero Province. The Santa Fe Swamp is 95-percent floodplain 7046 acre swamp.  Along with Lake Santa Fe and Little Lake Santa Fe, it serves as headwaters of the Santa Fe River, which drains into the Suwannee River and then finally the Gulf of Mexico.  It is located to the north of those lakes in Bradford County and Alachua County in Florida. Province of Santa Fe Railway (in Spanish: Ferrocarril Provincial de Santa Fe and in French: "Compagnie Française de Chemins de Fer dans la Province de Santa Fe") was a French-owned company that purchased a railway network built by the provincial government of Santa Fe in Argentina on 10 April 1900 and later extended it in the provinces of Chaco and Córdoba.  After nationalisation in 1948 it became part of the state-owned company Belgrano Railway The Santa Fe–Coronda Marathon (formal name "Coronda River Aquatic Marathon"; in Spanish: "Maratón Acuatíco Río Coronda") is a 57-kilometer open water swimming race that takes place on the Coronda and Salado rivers (both tributaries of the Paraná River) in Argentina.  The race joins the cities of Santa Fe, Santo Tomé and Coronda, in Argentina's Santa Fe Province.  The race has a total length of about 57 km and an expected run time of about 8 hours.  It is held yearly in the summer (January or February). The Santa Fe Watershed Association is a non-profit organization based in Santa Fe, New Mexico.  The mission of the Santa Fe Watershed Association is to return the Santa Fe River to a living river, from its beginning at Lake Peak to its final outfall at the Rio Grande, balancing human uses with natural resource protection and restoring the heart to the Santa Fe community.  The organization sponsors activities such as river cleanups, adoption of stretches of the river, and educational talks pertaining to the river. Santiago del Estero (] ), also called "Santiago", is a province in the north of Argentina.  Neighbouring provinces, clockwise from the north, are Salta, Chaco, Santa Fe, Córdoba, Catamarca and Tucumán. Santa Fe de la Vera Cruz (usually called just Santa Fe) is the capital city of the province of Santa Fe, Argentina.  It is situated in north-eastern Argentina, near the junction of the Paraná and Salado rivers.  It lies 15 kilometers from the Hernandarias Subfluvial Tunnel that connects it to the city of Paraná.  The city is also connected by canal with the port of Colastiné on the Paraná River.  Santa Fe has about 500.000 inhabitants as per the 2010 census .  The metropolitan area has a population of 653.073, making it the eighth largest in Argentina.  The third largest city in Argentina is Rosario, also located in Santa Fe Province.  Rosario has a population of 1.24 million and it is the largest city in Argentina not to be a provincial capital.
Answer: Argentina