Complex sentence: Weber emphasizes that well into the 19th century few French citizens regularly spoke French, but rather regional languages or dialects such as Breton, Gascon, Basque, Catalan, Flemish, Alsatian, and Corsican.
Split into simpler sentences: Weber emphasizes that well into the 19th century few French citizens regularly spoke French. Instead, many of the inhabitants of France spoke regional languages or dialects such as Breton, Gascon, Basque, Catalan, Flemish, Alsatian, and Corsican.