Editing Old French (section)

===Transition to Middle French===
{{Further|Middle French}}

In the Late Middle Ages, the Old French dialects diverged into a number of distinct {{lang|fr|langues d'oïl}}, among which [[Middle French]] proper was the dialect of the [[Île-de-France]] region.
During the [[early modern France|Early Modern period]], French was established as the official language of the Kingdom of France throughout the realm, including the {{lang|fr|langue d'oc}}–speaking territories in the south.
It was only in the 17th to 18th centuries – with the development especially of popular literature of the ''[[Bibliothèque bleue]]'' – that a standardized [[Classical French]] spread throughout France alongside the regional dialects.