So let's say the revolutionaries are defeated, or that the rebellion never happens at such a large scale due to more appeasing British management. Just hand-wave the whole thing, it doesn't matter how.
My question is, how would the political subdivisions look and develop? What would the provinces look like, with the 13 Colonies and Canada all being British? Would it all become one dominion, or would the borders be kept? I'm not particularly well-informed on this area of history, but I'm sure someone here has an idea of what it would look like.