Is Canadian unity possible?

Since the beginning of Canada it has been a large country with a small spread out, multi-ethnic population. The modern Canadian identity is often hyphenated, complex and difficult to define. The "Quebec question" of separation from the rest of Canada is a question that has never been properly answered. With all of this in mind, is a lasting unity of this country of differences possible? If so, what would it look like? If not, how could a broken up Canada work? Would large parts be absorbed into the United States?