When on Earth?

This companion to 2013's Where on Earth? takes an atlas-style approach to history, with world maps highlighting the development of written language and other inventions, the rise and fall of nations, technological advances, and more. Divided into sections devoted to the ancient, medieval, and modern worlds, as well as the 20th and 21st centuries (each opens with a time line noting key historical events), the book offers a trivia-filled and highly visual look at the growth of civilization, good and bad alike. In a spread devoted to the slave trade, sections of twined rope, used to trace multiple shipping routes, vary in thickness to correspond to the number of slaves transported between certain nations. Ages 8%E2%80%9312. (Apr.)