In this episode, we explore the sweeping history of Islam, from the life and teachings of the Prophet Muhammad and the rise of the first Muslim community in seventh-century Arabia to the rapid expansion of Islamic civilization across the Middle East, North Africa, Asia, and parts of Europe. We examine the Rashidun, Umayyad, and Abbasid caliphates, the political divisions and dynasties that followed, and the emergence of major centers of learning, trade, science, philosophy, medicine, art, and architecture throughout the Muslim world. The episode also considers the development of Sunni and Shia traditions, the influence of Islamic empires such as the Ottomans, Safavids, and Mughals, and the interactions between Muslim societies and neighboring civilizations through commerce, conquest, scholarship, and cultural exchange. Al-Andalus appears within this wider history as one important example of Islamic political and intellectual influence in Europe, alongside developments across Africa, Central Asia, Persia, India, and the Mediterranean. We also trace the effects of the Crusades, Mongol invasions, European colonialism, reform movements, nationalism, and the creation of modern Muslim-majority states, highlighting how more than fourteen centuries of religious, political, intellectual, and cultural change have shaped Islam into a diverse global civilization.