The document provides background information on the origins of Islam through the life and teachings of Mohammed. It discusses that Mohammed was born in 570 AD in Mecca to a merchant family. He began receiving revelations in his 40s and preached monotheism, emphasizing social justice. Opposition forced him to flee to Medina in 622, marking the beginning of the Islamic calendar. By 630, he conquered Mecca and established it as the center of Islamic pilgrimage. After his death, Islam expanded rapidly under the Rashidun caliphs before the Umayyad and Abbasid dynasties took control of the Islamic empire.