Amazon(Brazil)
Geography: The Amazon River is located in South America and is the largest river in the world for the area of the basin (7,180 km²). According to the results of the 2011 world contest, the Amazon is recognized as one of the seven natural wonders of the world.
Basin area: 7 180 000 km².<
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Rio-Grande River(Argentina)
Geography: The Land of Fire is situated on the southern border of South America. It includes more than 40,000 islands. Its western part administratively belongs to Chile (the area of Magallanes-i-la-Antarctica-Chilena).
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