Final answer:
The key exports from the Songhai Empire were gold and slaves, which contributed to the empire's wealth. In addition to these, the empire also imported a variety of goods.
Step-by-step explanation:
The key exports from the Songhai Empire were gold and slaves. These were the principal goods that contributed to the empire's wealth. Gold was the primary commodity transported along the trans-Saharan trade routes, while enslaved captives were also exported. In addition to these, the empire also imported a variety of goods, including Saharan salt, luxury goods, horses, and cloth.