Historian Michael Wood′s documentary series travels the globe to trace the origins of the tools and lifestyles that led to organized civilization. Wood visits the sites of the world′s first cities, as well as early empires such as India and China. 　　Episode 1: Iraq: Cradle of Civilization 　　Episode 2: India: Empire of the Spirit 　　Episode 3: China: The Mandate of Heaven 　　Episode 4: Eg...