Pampas in cities, as industrialization picked up after the 1930s. As a result, Argentina's history of immigration in Buenos Aires Province is typically associated with cities and urban life, unlike in Entre Ríos Province and Santa Fe Province, where European immigration took on a more rural profile. 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
1973 Boundary Treaty between Uruguay and Argentina 1973 Boundary Treaty between Uruguay and Argentina The Treaty between Uruguay and Argentina concerning the Rio de la Plata and the Corresponding Maritime Boundary was signed in Montevideo on 19 November 1973 by Dr. Juan Carlos Blanco Estradé, Minister for Foreign Affairs of Uruguay and Mr. Alberto J. Vignes, Minister for Foreign Affairs and Worship of Argentina. The treaty provides the geographic coordinates for the boundary points in the Rio de la Plata, affords the status of Martín García Island and other islands in the Rio de la Plata, designates Isla Martin Garcia as the seat of an Administrative Commission