I would say D. sorry if not.
Your answer would be C, mainly because the soil near a waterway is very fertile, and before cars, boats were a cheap, easy way of transit.
If other countries aren't willing to fight for them and they cant fight for themselves the United States probally would but no we dont have to
It mught give some extra events some more background events stuff that happened that they did not know bout
It was "Alexander I" who was the Russian Tsar who refused to surrender to Napoleon in 1812, even after Moscow had been captured and burned, since he suspected (correctly) that Napoleon's army would not be able to endure.