If we assume that he won at Waterloo with a crushing victory and was able to control most of Europe before the allied parties against him had the time to rebuild an army, we could safely assume that he would control most of Western Europe, especially if he was able to build a peaceful empire. We'd be talking about the Pax Francium along with the Pax Romanum and Pax Britanicum. Nation states in Europe would be far different. German, which didn't unify for another sixty years, would most likely never have unified. This would throw out both world wars. Without the struggle of the first world war in Russia, Leninist Marxism wouldn't have come about. Marxism might not even have come about, as the struggle in the German and French states were the inspiration behind his and Engle's Manifesto. France would be a super power, weakening the ability of Britain to become as large as it was. The United States wouldn't have been affected too much, except that they wouldn't prosper from loaning money to the Allies for the World Wars. If America was on good terms with the French, we could assume that we would have gone to the moon much later, if at all. If America moved to bad terms with the French, the Cold War could have been against the French. We wouldn't have countries banding together to denounce war because the United Nations wouldn't have been created. We could assume that France conquered much of Europe and Asia, perhaps having control of all of Asia south of Russia.