Book excerpt: The third volume in the Andean Archaeology series, this book focuses on the marked cultural differences between the northern and southern regions of the Central Andes, and considers the conditions under which these differences evolved, grew pronounced, and diminished. This book continues the dynamic, current problem-oriented approach to the field of Andean Archaeology that began with Andean Archaeology I and Andean Archaeology II. Combines up-to-date research, diverse theoretical platforms, and far-reaching interpretations to draw provocative and thoughtful conclusions.