 Increasing power of the Mossi kingdoms resulted in larger conflicts with regional powers.The Kingdom of Yatenga became a key power attacking the Songhai Empire between 1328 and 1477 taking over Timbuktu and sacked the important trading post of Macina.When Askia Mohammad I became the leader of the Songhai Empire with the desire to spread Islam, he waged a holy war against the Mossi kingdoms in 1497.