"This book brings together a distinguished group of scholars: evolutionary biologists; political scientists; sociologists; anthropologists; economists; primatologists; and human ethologists. Contributors examine how ethnic diversity can affect the level of welfare and cross-ethnic charitableness at both national and cross-national levels, in industrial and tribal societies. A study of meat-sharing in chimpanzees provides a cross-species comparison." "This book breaks new ground in advancing our understanding of multicultural politics, ethnic competition and conflict."--Jacket.