they protect their language by keeping approximately by keeping their congruent amount of people out of their country
their culture and language
the people of Quebec want to keep their culture
The official language of Quebec is French. But most people in the areas around Quebec , speak both languages fluently
This is because the people of Quebec want to keep their French culture and religion.
Over 7 million people in Quebec speak French as their first language, making it the predominant language in the province. French is also a requirement for official communication and documentation in Quebec.
French is spoken by the majority of people in Quebec. France once had settlements in the area which is now the Canadian province of Quebec.
You cannot put a language in with a culture it is not from people will not understand you. A language comes from the culture which it is derived from.
Your question is not clear enough. Do you mean: 1) What does Quebec want to achieve by seceding from Canada? 2) Why does Quebec want to secede from Canada? 3) What does Quebec want to take from Canada if it was to secede? Here are one sentence answers to the 3 possible questions: 1) Full independence, transferring all the branches of political power that regards Quebec from Ottawa to Quebec and protecting its cultural heritage. 2) Because it is the only French speaking province in Canada, it has a different culture, people there thing different politically and they feel that their culture is shrinking under the pressure of the English demographic pressure and that it is the best way to protect their language. 3) Quebec's actual territory.
It has kept it's heritage by speaking the native language which is french.
I would go with the fact that Quebec was a French colony for quite a long time--as was Louisiana--and the French language and culture transferred to the Quebecois. The rest of Canada was mostly colonized by the British, hence the fact that they mostly speak English.
If 80% of people in a culture speak Spanish, then that language is likely part of the dominant or official language in that culture.
Their French Heritage. French culture and language.