When Guinean Muslims leave their homeland, they encounter radically new versions of Islam and new approaches to religion more generally. In Remaking Islam in African Portugal , Michelle C. Johnson explores the religious lives of these migrants in the context of diaspora. Since Islam arrived in West Africa centuries ago, Muslims in this region have long conflated ethnicity and Islam, such that to be Mandinga or Fula is also to be Muslim. But as they increasingly encounter Muslims not from...