Question

Where and when did the French language start and end?

Answer 1

The french language never ended. The french language started when the roman cities or populations had huge distances between each one. Slang in each population was different so overtime they became new languages such as italian, english, french, and spanish

Answer 2

I'm not sure if this is the right answer...
WHERE:
The Gallo-Romance group in the north of France, the langue d'oïl like Picard, Walloon, and Francien, were influenced by the Germanic languages spoken by the Frankish invaders. From the time period of Clovis I on, the Franks extended their rule over northern Gaul.