Empires between Islam and Christianity uses the innovative approach of “connected histories” to address a series of questions regarding the early modern world in the Indian Ocean, the Mediterranean, and the Atlantic. The period between 1500 and 1800 was one of intense inter-imperial competition involving the Iberians, the Ottomans, the Mughals, the British, and other actors. Rather than understand these imperial entities separately, Sanjay Subrahmanyam reads their archives and texts together to show unexpected connections and refractions.