Worlds Together, Worlds Apart is organized around major world history stories and themes: the emergence of cities, the building of the Silk Road, the spread of major religions, the spread of the Black Death, the Age of Exploration, alternatives to nineteenth-century capitalism, the rise of modern nation-states and empires, and others. The Fourth Edition of this successful text has been streamlined, shortened, and features a new suite of tools designed to help students think critically, master content and make connections across time and place.