Final answer:
Askia Muhammad changed the government of the Songhai Empire by centralizing power through the appointment of provincial governors and strengthening the state. He also extended the empire's territory, regulated trade, and promoted Islam.
Step-by-step explanation:
Askia Muhammad, also known as Askia the Great, made significant changes to the government of the Songhai Empire. Under the previous ruler, Sunni Ali, provincial administration was left to traditional rulers. However, Askia abandoned this model and appointed royal family members or trusted servants as provincial governors, who were entirely dependent on his favor. This centralized power and curtailed the risk of regional breakaways. Askia also extended the empire's territory, regulated trade, and promoted Islam.