Does history matter? This book argues not that history matters, but that Islamic history does. This Very Short Introduction introduces the story of Islamic history; the controversies surrounding its study; and the significance that it holds - for Muslims and for non-Muslims alike. Opening with a lucid overview of the rise and spread of Islam, from the seventh to twenty first century, the book charts the evolution of what was originally a small, localised community of believers into an international religion with over a billion adherents. Chapters are also dedicated to the peoples - Arabs, Persians, and Turks - who shaped Islamic history, and to three representative institutions - the mosque, jihad, and the caliphate - that highlight Islam's diversity over time.