This boundary is solely defined by three major rivers: the Pilcomayo, Paraná and Paraguay, being one of the largest natural borders in the world.
The capital of Argentina is Buenos Aires, which lies on one of the banks of the River Plate, made by major Paraguayan tributaries.
Argentina is the country which Paraguay has the largest border with, being about 1,689 km long.
Some of the traditional Argentine-Paraguayan border checkpoints:[2][3][4][5][6] Isla del Cerrito is located at the confluence of the Paraguay and Paraná Rivers.
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