I beg to differ
Argentina: History, Geography, Government, and Culture — Infoplease.com
First explored in 1516 by Juan Diaz de Solis, Argentina developed slowly under Spanish colonial rule. Buenos Aires was settled in 1580; the cattle industry was thriving as early as 1600. Invading British forces were expelled in 1806—1807, and after Napoleon conquered Spain (1808), the Argentinians set up their own government in 1810. On July 9, 1816, independence was formally declared.
It is also incorrect to assume that before any colonisation took place, it was uninhabited wilderness.
Some south american civilisations predate our own.