170 AFRICAN POLITICAL SYSTEMS trading goods, or till they have found another 'passenger3 (in native phraseology) to engage them for a profitable return journey. Here we grasp the significance of this productive system for the organization of settlement in Kede country. The long canoe expeditions necessitate fixed stopping and resting places, where the canoemen must be sure to find shelter and food and opportunity to refit their craft. The 'termini' of their river routes more specially will tend to become at least seasonal 'colonies' of Kede. The stopping and waiting places will naturally be chosen in accordance with commercial considerations. And, finally, there must be some system of political protection, which could ensure the safety (speaking of pre-British times) of these far-flung routes, the stopping places with their valuable stores, and the seasonal or permanent trading posts:1 trading posts which, of necessity, tend to become political colonies—this gives us the formula of Kede settlement. IV. Settlement We are fortunate in possessing data which allow us to trace in detail the history of settlement and population movement in Kede country. Our data are derived only partly from oral tradition. The history of Kede settlement reaches into the well-documented era of Nigerian exploration and British occupation; its last phases are happening under our very eyes. In addition to these historical records, we possess evidence of a different kind, which, indirectly, contributes considerably to our understanding of population movement in Kede country: it lies, as we shall see, in the lay-out and organization of the present-day Kede settlements themselves. According to Kede tradition, their tribal home was near the confluence of Niger and Kaduna, near Muregi, which, some time later, became their political capital. From there they are said to have extended their settlements, and rule at the same time, gradually over the river banks towards the north and the south 1 A case in point is the uninhabited right bank of the Niger above Jebba, where constant raids by inland tribes (from Borgu) made settlement impossible. The left bank, on the other hand, could be adequately protected, and here the Kede established a settlement at Buka (it was later moved to Jebba). In the south, Kede canoes did not travel beyond Eggan in pre-British days. The river south of Eggan was the domain of the Kakanda, a warlike riverain tribe of non-Nupe stock, which refused Kede canoes admittance into their area. Trade goods for the south had to be trans-shipped at Eggan to Kakanda canoes.