Human civilization was destroyed; almost. Global warming raised average air temperatures by twenty degrees and sea levels by two feet. Food production dropped dramatically and all major ports were under water. International commerce disappeared, and so did industrial civilization; almost. North central Canada was shielded from the global starvation, plagues and food wars by the Great Lakes, the Atlantic Ocean and the Arctic. Lead by Toronto, Montreal and other medium to large cities, they held together a regional government. When global warming stabilized, this government decided that they...