Suppose Bonaparte did not sold France's claims of Louisiana to the US, and decided to keep it. Louisiana territory became stagnant, the US not making a colonization attempt on the west, and the ACW never happened. Thus, Louisiana was still a part of France until 1870, when the Franco-Prussian War started. When the war was over and the French defeated, Otto von Bismarck saw a need for a unified Germany to have an American territory and forced the French to cede Louisiana to the newly formed Germany. Louisiana became a German province. By then, the lands in the west are still inhabited by the Native Americans and Germany made a drive to colonize the lands and obtain a Pacific port. But Germany faced Mexico in her moves. Mexico-German war then started over border dispute. Germans won, and Mexicans were forced to cede Alta California and Nuevo Mexico to Germany.
Years go by with Germany in an arms race with other nations. Great war erupts with the Balkan Incident and fierce fighting is seen at Europe. Little warfare is seen at the Americas, for the bulk of German and British Forces are recalled at home. Germany attacked but was defeated in the process. Before the war is over, the German province in the America, under impression that the European Germany was no better than the American one, the German province seceded from her parent country, and formed the new nation of Deutschprovinzen. Germtan would become it's national language, as part of it's ties to Germany.
What would your opinions be?