And these are important not just to get a reference towards Christianity and Judaism, but because according to Islamic tradition, Islam is built on top of the teachings of Abraham or the teachings of Moses and the Torah and the teachings of Jesus. Muslims believe that the Quran is the final testament, so to speak. Now, to get some context, Muhammad was born in 6th century Arabia. And 6th century Arabia was an interesting place. In many other videos, we've talked about various empires around the Mediterranean, around the Mesopotamia, in Persia. And even on this map, in the time of Muhammad, you see significant empires, the Byzantine Empire, the Eastern Roman Empire. You have Sassanid Persia.