Canada does not want Quebec to separate. Quebec wants to separate from Canada, although if they were to separate from them, their economic structure would fail.
"their economic structure would fail" There is not yet any serious studies on that matter only opinions. This statement is only based on speculation and biased subjective ideas. Although the possibly of Quebec's economy being downed by its independence exists there are no way to accurately predict the consequences and the complete opposite could be also true. It is known that Quebec would have to take its share of the federal debt and that would result in its public debt raising from +/-75% of its GDP to +/-94.5% of its GDP but considering that the United-States-Of-America (a country that may not be in the best shape as possible but still can stand strong anyway) has a public debt of 99% of its GDP the impossible to overcome debt theory is not likely to be right. There is also the idea that Quebec receives more from federal government that it sends. Again this is a misconception. Quebec sends to federal government roughly 40 billion dollars every year in Government Sales Taxes while it receives about 36 to 38 billion dollars of investments by the federal government including the equalization payments. This being said if Quebec was to become independent it would get back about 2 billions which would not be a major advantage and all the money from the federal taxes that would now be only to Quebec would be invested in pretty much (more or less) the same way it was by Canada's government but instead by Quebec's government.
So to conclude, Quebec's economic future would solely depend of its relations with its neighbors, the kind of government it chooses and its foreign industrial/commercial investors tax rate.
because of the econemy
California did not secede; it remained loyal to the union.
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.
Which event caused the Southern States to secede from the Union
No. We don't want to.
Texas
Joto
They did not want Lincoln as their president because he wanted to end slavery.
Because they didn't believe in slavery strongly enough to want to break up the Union.
Their French Heritage. French culture and language.
Because they didn't believe in slavery strongly enough to want to break up the Union.
They disagreed with the stated policy of the federal government.