The religion of Islam traces it beginnings to the 600s in what is present-day Saudi Arabia. The angel Gabriel was said to have visited the prophet Muhammad, who then shared the word of Allah, or God, with the people. Today Islam has more than a billion followers. Learn more about the rich history and traditions of Islam and how the religion fits into todays world in Islam, part of the World Religions series.
Nardo is a historian and award-winning writer who specializes in ancient Greek and Roman civilizations. He taught high school for eight years, while writing part-time.