... differences in pronunciation, grammar, and vocabulary in the United States and Canada. There are naturally hundred of such differences. But in spite of these differences, North Americans do ... understanding one another, even if they come from places that are as far as, say, the northern part of Canada and the south Texas. The linguistic differences are simply not great enough to interfere ... determined by geography and not by social or economic class as they are in some other countries.I want to say, in conclusion, that I have given you just a handful of examples of regional differences...