Today in History of Nigeria Episode 8

Hausa states

By the 11th century some Hausa states - such as Kano, Katsina, and Gobir - had developed into walled towns engaging in trade, servicing caravans, and the manufacture of various goods. Until the 15th century these small states were on the periphery of the major Sudanic empires of the era. They were constantly pressured by Songhai to the west and Kanem-Bornu to the east, to which they paid tribute. Armed conflict was usually motivated by economic concerns, as coalitions of Hausa states mounted wars against the Jukun and Nupe in the middle belt to collect slaves or against one another for control of trade.

Islam arrived to Hausaland along the caravan routes. The famous Kano Chronicle records the conversion of Kano's ruling dynasty by clerics from Mali, demonstrating that the imperial influence of Mali extended far to the east. Acceptance of Islam was gradual and was often nominal in the countryside where folk religion continued to exert a strong influence. Nonetheless, Kano and Katsina, with their famous mosques and schools, came to participate fully in the cultural and intellectual life of the Islamic world. The Fulani began to enter the Hausa country in the 13th century and by the 15th century they were tending cattle, sheep, and goats in Bornu as well. The Fulani came from the Senegal River valley, where their ancestors had developed a method of livestock management based on transhumance. Gradually they moved eastward, first into the centers of the Mali and Songhai empires and eventually into Hausaland and Bornu. Some Fulbe converted to Islam as early as the 11th century and settled among the Hausa, from whom they became racially indistinguishable. There they constituted a devoutly religious, educated elite who made themselves indispensable to the Hausa kings as state advisers, Islamic tribunes, and teachers.