This is what the world looked like in the year 600. Muhammad starts spreading his revelations in 610. And so you can see on this map, there's two major powers, the Byzantines, which is the Eastern Roman Empire, the vestiges of the Roman Empire, and you also have the Sassanid Persian Empire. The Byzantines are a Christian empire, and the Sassanids are Zoroastrian. And Muhammad is from the Quraysh tribe, which is in charge of Mecca, which is considered a pilgrimage site for the various tribes of Arabia. But you can see that Arabia is fragmented, and this doesn't even do justice to how fragmented it was. But if you fast forward 200 years, you see a major change.