The Patriot War was a conflict Hostile_encounter along the Canada–United States border where bands of raiders attacked Attack the British colony of Upper Canada more than a dozen times between December 1837 and December 1838 .

The results of a separate study Research indicated Statement that it may have been a larger event Confronting_problem , placing Placing the shock Catastrophe in the North Cascades , just south of the Canada–United States border at Ross Lake .