Historical explanations of the rise and expansion of the first Saudi state have given Wahhabism pride of place. Principally, they have dwelt on religion and ideology, emphasising the role of the eighteenth-century theologian Muḥammad ibn ʿAbd al-Wahhāb and arguing that his charisma, puritanical zeal, exclusivist approach to monotheistic worship, or neo-orthodox reform programme inspired a series of consequential political and military actions, beginning with the foundation of a theocratic emirate in Dirʿiyya and culminating in the conquest of much of Arabia. However much Wahhabi doctrines might have motivated warfare and state expansion, this article contends that the rise of the Saudi state depended on the spread of a new weapon—the matchlock gun. It considers the significance of firearms in regional warfare and, after making the case that they were likely to have been imported, builds up the revisionist argument that Najd had significant connections to world trade.
