Rangeland in regions too dry to support a forest, but not dry enough to be a desert. Pampas are the fertile South American lowlands that include the Argentine provinces of Buenos Aires, La Pampa, Santa Fe, Entre Ríos and Córdoba, most of Uruguay, and the State of Rio Grande do Sul, in the southernmost end of Brazil covering more than . These vast plains are only interrupted by the low Ventana and Tandil hills near Bahía Blanca and Tandil (Argentina), with a height of and respectively. The climate is mild, with precipitation of to , more or less evenly distributed through
South American Championship of Champions admitted only the previous Copa Libertadores champions, and by FIFA's and Conmebol's sites. The aim of the organizers was to invite the champion of the most important competition of each South American country. Most notable in the competition were the host Colo-Colo, the Alfredo Di Stéfano-inspired River Plate, the Atilio García-inspired Nacional, and Vasco da Gama, the respective representatives of Chile, Argentina, Uruguay and Brazil, four countries whose clubs would go on to become the dominant powers of South American football, aggregately winning all Copa Libertadores from 1960 to 1978 and over 90% of the Copa Libertadores from 1960 to