米英戦争のカナダ戦線
米英戦争のカナダ戦線（べいえいせんそうのカナダせんせん）は、アメリカ合衆国とイギリスが戦った米英戦争（1812年 - 1815年）の主に五大湖地方とカナダを戦場とした一連の戦闘である。アメリカ合衆国は、カナダ征服が容易なものと考えて、カナダ駐在のイギリス軍の何倍もの戦力を投入したが、イギリス軍が巧みに抗戦し一進一退の攻防となった。ナポレオン戦争の帰趨が見えた1814年からは、イギリス軍が部隊を増強し攻勢に出たが、大きな成果には結びつかなかった。結局両軍とも目立った成果の無いまま終戦となった。
英米関係
In several episodes the American general Winfield Scott proved a sagacious diplomat by tamping down emotions and reaching acceptable compromises. Scott handled the "Caroline" affair in 1837. Rebels from British North America (now Ontario) fled to New York and used a small American ship called the "Caroline" to smuggle supplies into Canada after their rebellion was suppressed. In late 1837, Canadian militia crossed the border into the US and burned the ship, leading to diplomatic protests, a flare-up of Anglophobia, and other incidents.
Tensions on the vague Maine–New Brunswick boundary involved rival teams of lumberjacks in the bloodless Aroostook War of 1839. There was no shooting but both sides tried to uphold national honor and gain a few more miles of timber land. Each side had an old secret map that apparently showed the other side had the better legal case, so compromise was easily reached in the Webster–Ashburton Treaty of 1842, which settled the border in Maine and Minnesota. In 1859, the bloodless Pig War determined the question of where the border should be in relationship to the San Juan Islands and Gulf Islands. But, the Clayton–Bulwer Treaty proved to be an important step in improving relations.