In Diversity and Unity in Federal Countries, leading scholars and practitioners analyse the current political, socio-economic, spatial, and cultural diversity in the countries under consideration before delving into the role that social, historical, and political factors have had in shaping the balance of diversity and unity. The authors assess the value placed on diversity by examining whether present institutional arrangements and public policies restrict or enhance diversity and address the future challenges of balancing diversity and unity in an increasingly populated and mobile world.