When about half the states of that country south of yours decided to cease obeying to the federal government, after long disputes regarding mostly trade, and demand the withdrawal of its troops, what happened?
What would really have happened in Canada had Trudeau's government lost the Quebec referendum?
And for a long time this syrian rebellion and this "free syrian army" have been violently attacking the government and assorted civilians in Syrian. As in blowing up people by the busload. When armed groups decided to openly challenge state authority in your country, what happens? That's the parallel to look into.
Also, what you advocate is invasion and colonial rule, not the extension of home government to other territories, complete will all rights and privileges of citizenship. When the USA went into the Philippines to... "liberate" the locals, what happened? What happened in the colonies of just about every european "ethical" colonial power? What happens still today in the less integrated territories of so many countries around the world?