Rio de la Plata is a vast estuary or bay located in South America that is bordered by Argentina and Uruguay. There are several synonyms for Rio de la Plata, including River Plate, Plate River, La Plata River, and the Silver River. The river's name originates from the Spanish language, which means the river of silver. It is one of the world's largest estuaries and forms a natural boundary between Argentina and Uruguay. Rio de la Plata provides a shipping route to major ports and is also an important fishing ground. It is a vital economic and cultural center for South America.