The Korowai, also called the Kolufo, are a people of southeastern Papua (i.e., the southeastern part of the western part of New Guinea). They number about 3,000. Until 1970, they were unaware of the existence of any people besides themselves.
The Kikuyu tribe, also spelled as Gikuyu, is the largest ethnic group in Kenya, making up about 22% of the countries total population. That equals around 6 million people, according to the 2007 CIA World Fact Book.