Which city was NOT one of the Songhay Empire's major ones Gao Timbuktu Algiers Jenne?

Algiers was not one of the major cities of the Songhay Empire. The empire's key cities included Gao, Timbuktu, and Jenne, which were crucial centers for trade, culture, and education in West Africa. Algiers, located in modern-day Algeria, was part of a different historical context and region.