Celtic/Norman cultures/languages were vigesimal, but with the Romans came Latin which is decimal. French evolved from Latin in uneven ways due to economic, cult

Celtic/Norman cultures/languages were vigesimal, but with the Romans came Latin which is decimal. French evolved from Latin in uneven ways due to economic, cultural, geographic and political factors. The best in depth explanation is here [0] but it's in French. Actually reading it my original statement is wrong; it's way more complicated. More likely decimal and vigesimal forms originated at the same time, depending on the factors I mentioned above. [0] https://french.stackexchange.com/questions/187/quelles-parties-du-monde-francophone-continuent-%C3%A0-utiliser-les-nombres-r%C3%A9form%C3%A9s https://french.stackexchange.com/questions/187/quelles-parti...