Are you retarded? They obviously moved southwestward(as my post says).
Stop trying to rewrite history! The Oyo empire is well known for being a former slave trading state.
You're an illiterate. How did Oyo move southwards when Eko and Ijebu kingdoms on the coast were autonomous Yoruba states and were never part of Oyo? Did they dislodge them and take over their kingdom in your new revisionist history, lunkhead?
This is an excerpt from your link again:
The Oyo Empire was a powerful Yoruba state in the modern country of Nigeria. It began in the 1300s in the West African savannah north of the tropical forests where other Yoruba peoples lived. Being in the savannah proved beneficial, as Oyo could use horses, which were unable to live farther south (due to the tsetse fly). Using this armored cavalry, the empire was able to extend its reach across parts of what is now northern and western Nigeria. Oyo was generally unable to penetrate to the coast except where the savanna reached southward to the ocean in Benin.
Oyo Empire | Slavery and Remembrance
So, because historians who could separate Oyo from coastal Yoruba kingdoms called everyone Oyo, that automatically makes everyone Oyo? Are you even African and what do you know about Yoruba history?
Dummy, you want to teach me the history of my own people and the geography of Yorubaland, yes? FOH.