Germany, When United, Is Always Trouble

Germany was unified in 1866, bringing together a hodgepodge of duchies and kingdoms, none of which was very powerful, but all of which shared a sort of Germanic culture. Kaiser Wilhelm's dreams of an All-Powerful German nation died on the battlefields of WWI, while Hitler's dreams of a racially pure Thousand-Year Reich died on the battlefields of WWII. Germany was broken in half, and that seemed to be the end of its ability to be a problem. However, Germany was not done making mischief. When it was finally reunified in 1990, it became the most powerful country in the EU and, in 2015, opened the door to mass radical Islamic immigration, destroying Europe and, potentially, the entire West.