Peter Davidson’s Atlas of Empires is a very accessible and informative history of all of the world’s major empires, describing the reasons for their rise and decline. Most history books focus on great leaders, battles won, lands conquered, and economies exploited when summarizing the history of an empire.While these are important aspects of empire-building, Peter Davidson uses a different lens to look at empires, as he explains in his introduction:This book, then, defines empire as an unequal relationship between a core state and a periphery of one or more states controlled from the core. To explain how empires have risen, persisted and fallen over the millennia, the core, the periphery and the international situation each need to be examined.The core state is the place to look to find various motives for expansion, from the dream of imposing an imperial peace on squabbling states to the desire for economic exploitation, lust for the glory of conquest or zeal for evangelism, religious or ideological.The periphery is the place to look for crucial resistance or collaboration. Specifically, the …