Original sentence: The fear is that Canada would be unworkable, if its four Atlantic provinces were effectively an exclave of the country.The logic of this approach is that Quebecers as a whole ought to have the right to determine by majority vote whether to separate from Canada, but that by extension, the residents of individual regions within Quebec ought to be accorded the same right to separate from Quebec and to remain within Canada
Edited sentence: The fear is that Canada would be unworkable if its four Atlantic provinces were to become an exclave.The logic of this approach is that, if Quebecers as a whole have the right to determine by majority vote whether to separate from Canada, then by extension the residents of regions within Quebec ought to be accorded the same right to separate from Quebec and to remain within Canada