Mayan Indians are one of the most popular on tribal lands, characterized by extremely high development (even said that the technology they have received from the aliens).
What’s so amazing Mayan? They created works of art – but not only paintings and sculptures, but entire cities carved out of stone, it is the Mayan calendar was invented, made active use of the letter, were remarkable astronomers.
By the way, the Maya and served another purpose – they have given birth and their direct descendants, and whole dynasties of Mexicans, Guatemalans, Hondurans. The remaining buildings include the Maya World Heritage, and protected as cultural monuments.