Presenting a theory to explain how politics revolves around one axis of social cleavage instead of another, Daniel Posner examines Zambia, where people identify themselves either as members of one of the country's seventy-three tribes or as members of one of its four principal language groups. Drawi...

Presenting a theory to explain how politics revolves around one axis of social cleavage instead of another, Daniel Posner examines Zambia, where people identify themselves either as members of one of the country's seventy-three tribes or as members of one of its four principal language groups. Drawi...