<P> The Russians invaded Siberia and conquered the indigenous natives in the 17th - 18th centuries . </P> <P> Nivkh people are an ethnic group indigenous to Sakhalin, having a few speakers of the Nivkh language, but their fisher culture has been endangered due to the development of oil field of Sakhalin from 1990s . </P> <P> Ainu people are an ethnic group indigenous to Hokkaidō, the Kuril Islands, and much of Sakhalin . As Japanese settlement expanded, the Ainu were pushed northward and fought against the Japanese in Shakushain's Revolt and Menashi - Kunashir Rebellion, until by the Meiji period they were confined by the government to a small area in Hokkaidō, in a manner similar to the placing of Native Americans on reservations . </P> <P> The Dzungar Oirats are the natives of Dzungaria in Northern Xinjiang . </P>

What are the elements that define indigenous identity