Battle of Matanza River

The Battle of the Matanza River, fought in 1541, was a conflict between indigenous Guarani tribes and Spanish colonizers in present-day Argentina. The Guarani initially resisted Spanish encroachment and exploitation, but faced military superiority and subjugation. The battle marked a significant setback for indigenous resistance in the region, leading to the decline of Guarani autonomy. It exemplifies the broader pattern of European conquest and indigenous displacement during the early colonial period, highlighting the violent struggles that shaped South America's history.