The Roman commander Julius Ceasar referred to Germania as the vassal state ruled by who?
Kingdom of Westphalia:  While formally independent, it was a vassal state of the First French Empire and was ruled by Napoleon's brother Jérôme Bonaparte. History of Germany: The concept of Germany as a distinct region in central Europe can be traced to Roman commander Julius Caesar, who referred to the unconquered area east of the Rhine as "Germania", thus distinguishing it from Gaul (France), which he had conquered.
i don't know