It's also that until the 19th century and compulsory education there were multiple dialects of French spoken throughout the country. "Royal French" is a descendant of Norman and was the language the bourgeoisie adopted after the revolution and that the rest of the country standardized on.
Same thing happened in the Americans French colonies in Canada and Louisiana; the settlers brought the "Royal" French with them because they were majorly from the north.
It's also that until the 19th century and compulsory education there were multiple dialects of French spoken throughout the country. "Royal French" is a descendant of Norman and was the language the bourgeoisie adopted after the revolution and that the rest of the country standardized on.
Same thing happened in the Americans French colonies in Canada and Louisiana; the settlers brought the "Royal" French with them because they were majorly from the north.