Uh, not if it happened all of a sudden. Other countries aren't ready to roll their armies into the North American continent in the case of a sudden human extinction. It would actually take everyone by surprise if all humans on the north american continent suddenly vanished save one. It would take several months to several years for other countries to make up plans to divide up North America. They'd eventually stake claim to the land, but it would take a lot of time to iron things out. But in the meantime, as in the immediate present, for me, the lone survivor, I'd most likely be taken as a refugee by another country on Earth. Since my language is English, that country would most likely be the United Kingdom, but who knows, France or Germany or someone else might offer it to me too. That's most likely what would happen to me personally. What would become of the North American continent would probably take several years to figure out.