He came to power through a coup that overthrew Sunni Ali Ber.
An epic about this ruler describes him as responsible for the codification of the caste system which defined the roles of nyamakalaw [NYAH-mah-kah-lau], probably to justify the social position of the poets who wrote it. This ruler came to power by a coup in partnership with the cleric al-Maghili, retroactively justified on the grounds that his predecessor was insufficiently Islamic. In the epic account of his rise to power, preserved by Nouhou Malio, he is given as the son of Kassaye and a river- djinn. This ruler was uncle to and a friend of Mahmud Kati, the author of a history that begins with his reign called the (*) Tarikh al-fattash. He traveled to Mecca with a caravan of thousands of camels, and came back with the materials to build his 17-meter-high tomb, which is high mud pyramid with wooden spikes sticking out. He came to power through a coup that overthrew Sunni Ali Ber. For 10 points, what Songhai ruler at the turn of the 16th century brought the empire to its peak?
An epic about this ruler describes him as responsible for the codification of the caste system which defined the roles of nyamakalaw [NYAH-mah-kah-lau], probably to justify the social position of the poets who wrote it.
Askia Muhammad I [prompt on partial answer]