After standing for more than a thousand years, the Roman Empire is one of the large superpowers right before WWI. America might enter the war, on either side. All the lands of the Austria-Hungry belong to the Roman Empire.
Central Powers:
German Empire (1914 borders)
Russian Empire (1914 borders)
Vs
Allies
British Empire (1914 borders)
Roman Empire
Central Powers:
German Empire (1914 borders)
Russian Empire (1914 borders)
Vs
Allies
British Empire (1914 borders)
Roman Empire