Yes it is by these to places lol
Mesopotamia
The junction of Uruguay River and the Parana River is the Rio de la Plata or the River Plate. The river is part of the margin between Uruguay and Argentina.
"Río Uruguay" (Uruguay river) in the east. It also limit with Argentina in the south east with the "Río de la Plata" (Silver River) estuary.
The Paraná and the Iguazu Rivers form the natural border between Argentina and Paraguay.
The Parana River empties into the Atlantic Ocean after having run through Brazil, Paraguay and Argentina.
The name Paraná is an abbreviation of the phrase "para rehe onáva" It merges first with the Paraguay River and then farther downstream with the Uruguay River to form the Río de la Plata and empties into the Atlantic Ocean.
The Uruguay River ("Río Uruguay" in Spanish) is the longest river in Uruguay. It has 1,770 kilometers (approx. 1100 miles) of length. It separates the country from its neighboring country Argentina and it's from where Uruguay takes its name.
Argentina,Brazil
The Parana River in South America, crossing through Uruguay, Argentina, Brazil, and Paraguay which uses it for hydraulic power, which feeds energy to all of the country and almost all of Brazil. It measures a length of 2,570 kilometers (1,600 miles).
The Parana River can be found in 3 countries: Argentina, Brazil, and Paraguay
There are three major rivers in Argentina. These rivers are the Paraguay River, the Parana, the Alto Parana, and the Rio de la Plata.
The capital of Argentina is Buenos Aires. Buenos Aires is located near the eastern coast of Argentina, at the mouth of the Rio Parana. Across from Buenos Aires lies Uruguay. It is also the most populous city of Argentina.