Original sentence: The Oyo Empire was one of the most politically important states in Western Africa from the mid-17th to the late 18th century, and held sway not only over most of the other kingdoms in Yorubaland, but also over nearby African states, notably the Fon Kingdom of Dahomey in the modern Republic of Benin on its west.The empire grew to become the largest Yoruba-speaking state through the organizational and administrative efforts of the Yoruba people, trade, as well as the military use of cavalry
Edited sentence: The Oyo Empire was one of the most politically important states in the entirety of Western Africa from the mid-17th to the late 18th century, and held sway not only over most of the other kingdoms in Yorubaland, but also over nearby African states, notably the Fon Kingdom of Dahomey in the modern Republic of Benin on its west.The empire grew to become the largest Yoruba-speaking state and rose through the outstanding organizational and administrative skills of the Yoruba people, wealth gained from trade, and its powerful cavalry