The Romans weren't super consistent either, at least when it came to the size of their military units: https://en.wikipedia.org/wiki/Centurion https://en.wikipe

The Romans weren't super consistent either, at least when it came to the size of their military units: https://en.wikipedia.org/wiki/Centurion https://en.wikipedia.org/wiki/Centurion > How'd they end up speaking German? You've probably heard of Anglo Saxons? After the Roman withdrawal came the Anglo Saxon invasion from Germany and Old German became the predominant language of England, even the name comes from these invaders (Angles -> Angle Land -> England). After that the Vikings and French added their layers to varying degrees, Celtic languages remained dominant in Ireland, Scotland and Wales until much later.