The word, tango, is Argentine Spanish and is believed to come from a term describing an African-American drum dance.
Bolivia has three official languages one of which is Spanish. The other are Indian languages one is called Aymara and the other is called Quechua. About one third of the people speak Spanish. But, most natural born Bolivians speak either of the two orignal native languages.
The Quechua language area is interrupted by large Aymara-speaking and Spanish-speaking regions. Speakers. Around 7-8 million people in the following countries: Peru (3,300,000), Bolivia (1,800,000), Ecuador (1,500,000), Argentina (900,000), Colombia (23,000).