The British ban on the international slave trade and the development of Arab-Swahili caravan routes from eastern Africa shifts the trade in slaves to the east. In western Central Africa, heightened demand for local African products such as ivory, wax, and rubber allows previously subjugated or isolated peoples such as the Chokwe to rise to economic prominence and displace traditional powers such as the far-flung Lunda and Luba states. Further east, the Arab-Swahili trade also deprives these polities of the trade on which they are dependent. The emergence of numerous small-scale chiefdoms results in the production of new forms of ornate and luxurious courtly arts across Central Africa. Elsewhere, extended periods of migration in present-day Gabon and political consolidation in modern Cameroon lead to the development of new forms of funerary and courtly art. The European partition of Africa in 1884 provides state support for German, Belgian, English, and Portuguese expeditions into Central Africa that supply newly created ethnographic museums and geographic societies with specimens of material culture from the region.