How was Muhammad able to unify the peoples of Arabia?

Question

How was the founder and prophet of Islam, Muhammad, able to unify the peoples of Arabia, and set out on what would become a massive and rapid campaign of conquest in the 7th century?

Answer 1

By faith in Islam, which is to solely submit to the will of your creator. The same message carried out by Abraham, Moses, and Jesus [Matthew 4:10 NIV Jesus said to him, “Away from me, Satan! For it is written: ‘Worship the Lord your God, and serve him only.’”].