The long reign of the sultanahs of Aceh is striking in a society where women rulers are usually seen as unnatural calamities, a violation of nature, or even forbidden in the name of religion. Sovereign Women in a Muslim Kingdom demonstrates how the sultanahs' rule was legitimized by both Islam and adat (indigenous customary laws). Khan provides original insights on the women's style of leadership and their unique relations with the male elite and foreign European envoys who visited their court. This book calls into question received views on kingship in the Malay world and shows how an indigenous polity responded to European companies in the age of early East-West encounters during Southeast Asia's age of commerce.