A map from 1911 showing the political boundaries of Argentina, Chile, Paraguay, and Uruguay at the time. Bordering portions of Brazil and Bolivia are also shown. State boundaries are shown in red, and the map includes capitals, major cities, towns, ports, villages, railways, rivers, terrain and coastal features. An inset map details the mouth of the River Plate (Rio de La Plata) with the important cities of Buenos Ayres, Montevideo, and neighboring cities.