In the latter part of the 19th century the Arabs took over the coastal trade from the Akamba, who then acted as middlemen between the Arab and Swahili traders and the tribes further upcountry. Their trade and travel made them ideal guides for the caravans gathering elephant tusks, precious stones and some slaves for the Middle Eastern, Indian, and Chinese markets. Early European explorers also used them as guides in their expeditions to explore Southeast Africa due to their wide knowledge of the land and neutral standing with many of the other societies they traded with.