Amazon.com description: Product Description: Essential Events offers a behind-the-scenes look at crucial moments of world history. Easy-to-read, compelling text explores revolutions, natural disasters, discoveries, and conflicts that had lasting effects. Also discussed are their causes and historical contexts. Eyewitness accounts allow readers to learn what happened in critical moments. Features include a table of contents, glossary, selected bibliography, Web sites, source notes, and an index, plus a timeline and essential facts. Delve in and discover how these Essential Events changed the world and how you live your life. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.