I decided to try an experiment in different forms of government than I would normally pick. I set up a game with me playing Germany, against Russia, England, and France. I thought I'd run Germany from Despotism->Monarchy->Nationalism, but when I tried to switch governments to Nationalism and had gone through that period of anarchy, (even though I had researched Nationalism), I couldn't pick it. I wound up picking Republic, which is fine, but isn't the form of government I intended. Any ideas why I can't select Nationalism?