What are the causes of French language expansion? Evidently it is historical that languages are evolved and expanded into new territories or countries. However, are there any other causes for that French language expansion specifically? or are there any literature discuss this topic at all? It seems difficulty for me to do research on this topic, and I want to learn more about it and write about it for my French history class.
If anybody know and would like to help out, I appreciate it a lot!