The Germanic tribes/peoples in OTL had a very vague sense of unity that only really showed itself when a massive power like Rome showed itself. Even then it was very unstable. So, what if the Germanic tribes had a stronger sense of unity, similar to the Gallic tribes. The only thing I can think of is if the Germanic tribes all spoke the same language like how the Gallic tribes all spoke Gallic. Any thoughts? Could the Germanic people have been more "civilized"?
(To clarify by Germanic I mean the people of Magna Germania)