The province that has threatened to leave the Canadian union because of cultural and linguistic differences is?

The province that has most prominently threatened to leave the Canadian union because of cultural and linguistic differences is Quebec.

While the province has never actually seceded, there have been multiple referendums on the issue, with the most recent occurring in 1995. The issue is deeply rooted in the history of Quebec, which has a distinct French-speaking culture and a history of conflict with English-speaking Canada.