If you are using the Essentials book, you may disregard chapters 16 through 18. Chapters 1 through 15 align with both the Full and Essentials versions of the text while chapters 16 through 18 align with only the Full version. *** Please note: The resources on this site align with both the Full edition (18 chapters) and Essentials edition (15 chapters) of American Government: Stories of a Nation. Welcome to the SAGE edge site for American Government: Stories of a Nation, Second Edition.