【Backgrounds】 "Not only have these wild tribes receded,but they are destroyed, and as they give way or perish,an immense and increasing people fill their place.There is no instance upon record of so prodigious a growth or so rapid a destruction" -Alexis de Tocqueville5 Copyright © 2012 Andy Guo. All rights reserved。 【 Backgrounds 】 l “Not only have these wild tribes receded, but they are destroyed, and as they give way or perish, an immense and increasing people fill their place. There is no instance upon record of so prodigious a growth or so rapid a destruction” -Alexis de Tocqueville