What date is when the Songhai refuse to pay tribute to Mali?

The Songhai Empire, under the leadership of Sunni Ali, refused to pay tribute to the Mali Empire around 1468. This act was a significant turning point, as it marked the beginning of Songhai's rise to power and the decline of Mali's influence in West Africa. The refusal to pay tribute was emblematic of Songhai's ambitions to assert its independence and dominance in the region.