The Rise of Islam Most of the Arabian Peninsula is (1) Desert, water found only at (2) Oasis . To survive in thie environment, early Arabs organized into (3) Tirbes . Some Arabs were desert herders. They moved from oasis to oasis and were called (4) Bedouin . Other Arabs lived in villages. ( 5) Makkah became the largest and richest of towns because it was a crossroads for merchants and a religious site. A successful man named (6) Muhammad was visited by an angel and given instructions to preach (7) Islam , meaning "surrendering to the will of (8) God . " He preached his message everywhere he went. He and his followers moved to the city Yathrib, which was later renamed (9) Madinah, meaning "the city of the prophet." He created a(n) (10) Ummah , a government that uses its power to uphold in Islam. He also built an army and conquered (11) Makkah in A.D. 630. After Muhammad died, Islam continued to spread all over Arabia. The mes...