How did Timbuktu was a model city that shows development in songhai?

Timbuktu was a model city in the Songhai Empire due to its role as a center of learning, trade, and cultural exchange. It housed prestigious Islamic universities, libraries, and scholars, attracting students and traders from across Africa and beyond. Its wealth came from trade in goods like gold, salt, and manuscripts, making it a symbol of economic prosperity and intellectual advancement in the region.