Answer:
A. Gunpowder
Explanation:
The Kingdom of Songhai fell to the sulfonate of Morroco in 1590 at the battle of Tondibi. Even though the number of soldiers of the Songhai empire was much, they lost heavily because the opposing team was making use of guns known as Arquebus and cannons which came to be as a result of the innovation of gunpowders.
Hence, in this case, the correct answer is Gun Powder.
