The second in ”series III” of Indigenous People. Delta’s imaginary voyage encounters this year (2006) Amazon’s indigenous people: Indios – Irmãos no Mundo [brothers in the world]. The Indigenous peoples of the Amazon comprise a large number of distinct ethnic groups who inhabited the country's present territory prior to its discovery by the Portuguese around 1500. The first Portuguese explorers called them índios ("Indians"), a name that is still used today in Brazil.