The indigenous peoples of the Americas are the pre-Columbian inhabitants of North and South America, their descendants, and many ethnic groups who identify with those peoples. They are often also referred to as Native Americans, Aboriginals, First Nations, and (by Christopher Columbus' geographic mistake) Indians, later disambiguated as Red Indians, American Indians, Amerindians, Amerinds, and by unique tribal citizenry. There are 565 federally recognized Native American tribes in the United States, and several more state recognized tribes.-----------Many parts of the Americas are still populated by indigenous Americans; some countries have sizable populations, such as Bolivia, Peru, Paraguay, Mexico, Guatemala, Colombia, and Ecuador. At least a thousand different indigenous languages are spoken in the Americas. Some, such as Quechua languages, Aymara, Guaraní, Mayan languages, and Nahuatl, count their speakers in millions. Many also maintain aspects of indigenous cultural practices to varying degrees, including religion, social organization and subsistence practices. Some indigenous peoples still live in relative isolation from Western society, and a few are still non-contacted peoples.