Fulani roots
The Fulani are an ethnical group that dates back to the 15th century from two major regions in Senegal and Guinea Conakry, Futa Toro and Futa Jalloh.
From there they spread to other corridor of the world, especially in West and Central Africa, in hunt of food and a better life for their creatures.
Although there's no fixed number of Fulani in the world, it's estimated to be at least 45 million, and they're the largest in West Africa.