The area of modern Zambia was inhabited by Khoisan hunter-gatherers until around AD 200, when technologically-advanced migrating tribes began to displace or absorb them. In the 12th century, major waves of Bantu-speaking immigrants arrived during the Bantu expansion. Among them, the Tonga people (also called Batonga) were the first to settle in Zambia and are believed to have come from the east near the "big sea". The Nkoya people also arrived early in the expansion, coming from the Luba-Lunda kingdoms located in the southern parts of the modern Democratic Republic of the Congo and northern Angola, followed by a much larger influx, especially between the late 17th and early 19th centuries. In the early 18th century, the Nsokolo people settled in the Mbala district of Northern province. During the 19th century, the Ngoni peoples arrived from the south. By the late 19th century, most of the various peoples of Zambia were established in the areas they currently occupy.