The Nambikwara were first contacted in but did not experience prolonged contact with Europeans until the early 20th century, when Brazilian army official Marechal
Cândido Rondon passed through Nambikwara territory to extend the telegraph lines. He estimated that there were around 10,000 Nambikwara. Shortly after contact with European Brazilians
epidemics of
measles and smallpox decimated the population to only 500 around 1930. The culture of the Nambikwara was the subject of studies by
French anthropologist Claude Lévi-Strauss, which were later analyzed by French philosopher
Jacques Derrida in his work
Of Grammatology. ==Bands and subgroups==