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.
Demography. Historically, Bolivia has been predominantly rural, with most of its Quechua-and Aymara-speaking peasants living in highland communities. The 1992 census confirmed that 80 percent of the people live in the highlands and noted increasing rural to urban migration.