Pampas Pampas The Pampas (from the , meaning "plain") are fertile South American lowlands that cover more than and include the Argentine provinces of Buenos Aires, La Pampa, Santa Fe, Entre Ríos and Córdoba; all of Uruguay; and the southernmost Brazilian State, Rio Grande do Sul. The vast plains are a natural region, interrupted only by the low Ventana and Tandil hills, near Bahía Blanca and Tandil (Argentina), with a height of and , respectively. The climate is warm, with precipitation of that is more or less evenly distributed through the year, making the soils appropriate for agriculture. The area is
Argentina–Uruguay border August 1828. After the war, the Treaty of Montevideo, sovereign Republic of Uruguay was created. The current border was established at that time. The official name of Uruguay, Eastern Republic of Uruguay, says that the country is on the east side of the Uruguay River. Argentina–Uruguay border The Argentina–Uruguay border is a line of 579 km marked by the Uruguay River, and is the border between Argentina and Uruguay. It starts in a triple border Argentina-Uruguay-Brazil, at the mouth of the Quaraí River in the Uruguay. The course follows the Uruguay river, passing west of the Uruguayan departments of Artigas,