The Correct Answer is Pygmies. Explanation & Key Takeaways: • The Achua was the endonym of a pygmy people found in the Democratic Republic of the Congo, south of the Welle River. • They were first described in the Western world in 1880–1883 by Wilhelm Junker. Related Concepts: • Bushmen • The Bushmen are the indigenous peoples of southern Africa. • They are mostly hunter-gatherers. • Their territory spans several nations. • Eskimo • The Eskimo are the indigenous circumpolar peoples who have traditionally inhabited the northern circumpolar region from eastern Siberia (Russia) to Alaska (United States), Northern Canada, Nunavik, Nunatsiavut, and Greenland. • Nagas • Nagas are indigenous people living in Nagaland, Manipur, and Arunachal Pradesh. • They are living in the remote and mountainous areas in between the Indian state of Assam and Burma.