Original: Quechuas is the the collective term for several ethnic groups in South America who speak a Quechua language ( Southern Quechua mainly ) , belonging to several ethnic groups in South America , above all in Peru , Ecuador , Bolivia , Chile and Argentina .
Simplified: Quechuas is the term used for several ethnic groups in ¨ South America that use a Quechua language ( Southern Quechua mainly ) . They belong to several ethnic groups in South America , above all in Peru , Bolivia and Argentina .