Some context: The indigenous peoples of the Americas are the pre-Columbian peoples of the Americas and their descendants. Although some indigenous peoples of the Americas were traditionally hunter-gatherers--and many, especially in the Amazon basin, still are--many groups practiced aquaculture and agriculture. The impact of their agricultural endowment to the world is a testament to their time and work in reshaping and cultivating the flora indigenous to the Americas. Although some societies depended heavily on agriculture, others practiced a mix of farming, hunting and gathering.
Indigenas or pueblos indigenas ("indigenous peoples") is a common term in Spanish-speaking countries, and pueblos nativos or nativos (lit. "native peoples") may also be heard, while aborigen (aborigine) is used in Argentina, and pueblos aborigenes (aboriginal peoples) is common in Chile. The term "Amerindian" (short for "'Indians of the Americas") is used in Quebec, the Guianas, and the English-speaking Caribbean. In Brazil, indigenas or povos indigenas are common if formal-sounding designations, while indio is still the more often-heard term (the noun for the Indian nationality being indiano), and aborigene and nativo being rarely used in Amerindian-specific contexts (e.g. aborigene is usually understood as the ethnonym for Indigenous Australians). Indigenous peoples are commonly known in Canada as Aboriginal peoples, which includes not only First Nations and Arctic Inuit, but also the minority population of First Nations-European mixed-race Metis people who identify culturally and ethnically with indigenous peoplehood. This is contrasted, for instance, to the American Indian-European mixed-race mestizos of Hispanic America (caboclos in Brazil) who, with their larger population (in most Latin American countries constituting either outright majorities, pluralities, or at the least large minorities), identify largely as a new ethnic group distinct from both Europeans and Indigenous Americans, but still considering themselves a subset of the European-derived Hispanic or Brazilian peoplehood in culture and ethnicity (cf. ladinos).  Indigenous peoples of the United States are commonly known as Native Americans or American Indians, and Alaska Natives.  Application of the term "Indian" originated with Christopher Columbus, who, in his search for India, thought that he had arrived in the East Indies. Eventually, those islands came to be known as the "West Indies", a name still used. This led to the blanket term "Indies" and "Indians" (Spanish indios, Portuguese indios) for the indigenous inhabitants, which implied some kind of racial or cultural unity among the indigenous peoples of the Americas. This unifying concept, codified in law, religion, and politics, was not originally accepted by the myriad groups of indigenous peoples themselves, but has since been embraced by many over the last two centuries. Even though the term "Indian" generally does not include the culturally and linguistically distinct indigenous peoples of the Arctic regions of the Americas--such as the Aleuts, Inuit, or Yupik peoples, who entered the continent as a second more recent wave of migration several thousand years before, and have much more recent genetic and cultural commonalities with the aboriginal peoples of the Asiatic Arctic Russian Far East--these groups are nonetheless considered "indigenous peoples of the Americas". The Portuguese and Spanish equivalents to Indian, nevertheless, could be used to mean any hunter-gatherer or full-blooded Indigenous person, particularly to continents other than Europe or Africa--for example, indios filipinos.
When did that term first get invented?
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Some context: Wishbone Ash are a British rock band who achieved success in the early and mid-1970s. Their popular albums included Wishbone Ash (1970), Pilgrimage (1971), Argus (1972), There's the Rub (1974), and New England (1976). Wishbone Ash are noted for their extensive use of the harmony twin lead guitar format which had been attracting electric blues bands since Jeff Beck and Jimmy Page had played together in the Yardbirds in 1966. Their contributions helped Andy Powell and Ted Turner to be voted "Two of the Ten Most Important Guitarists in Rock History" (Traffic magazine 1989), and to appear in the "Top 20 Guitarists of All Time" (Rolling Stone).
Turner was replaced by bassist and vocalist John Wetton, formerly of Family, King Crimson, Roxy Music, Uriah Heep and UK. Number the Brave was released in April 1981 and featured Wetton's lead vocals on just one song, although during album sessions he had offered songs such as "Here Comes the Feeling" that would eventually sell millions when released on Asia's 1982 debut album. Wetton did not continue with Wishbone Ash beyond the album sessions and rejoined Asia.  Wetton was replaced on the Number the Brave tour by the former Uriah Heep bassist Trevor Bolder. Also joining the band was female backing vocalist, Claire Hamill, who had sung on both the Just Testing and Number the Brave albums. In 1982, after Hamill's departure, the band experimented with heavy metal on the Twin Barrels Burning album. It became the highest charting Wishbone Ash album in years (UK #22).  Bolder left the group to rejoin Uriah Heep in 1983, to be replaced by bassist/vocalist Mervyn Spence (ex-Trapeze). The group continued with a heavy metal side on 1985's Raw to the Bone, which became the first Wishbone Ash album not to make the charts. Not long after, Wisefield left after serving as guitarist in the band for eleven years, going on to a varied career that would include work with Tina Turner, Joe Cocker, Roger Chapman, Jeff Wayne and the Queen musical We Will Rock You. He was replaced by Jamie Crompton, who in turn was succeeded briefly by Phil Palmer. Early in 1986, Mervyn Spence quit as well, to be replaced by ex-Kinks bassist Andy Pyle.
Was there a reason given for why he left the band?
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