Book excerpt: Nielsen describes the history of early European Muslims and outlines the causes and courses of twentieth-century Muslim immigration. Explaining how Muslim communities have developed in individual countries, the book examines their origins, their present-day ethnic composition, organizational patterns, and the political, legal and cultural contexts in which they exist. The book also provides a comparative consideration of issues common to Muslims in all Western European countries, namely the role of the family, and questions of worship, education, and religious thought.In the third edition, all country-related chapters have been substantially updated. A new chapter has also been added on southern Europe, where the maturity of a new generation has seen moves toward political integration.