Quechua is an indigenous South American language. A version of Quechua was widely spoken across the Central Andes region before the time of the Incas, for whom it became the official language of their empire. There are roughly 10 million Quechua speakers in at least seven territories. The majority are in four of these; around 4.7 million in Peru, also in the south-west of Bolivia, much of Ecuador, and an area of north-west of Argentina. The remainder are in the south-west of Colombia, northern Chile, and a few in the United States.