1838: The Caroline affair on Navy Island, Upper Canada: After the failure of the Upper Canada Rebellion of 1837 favoring Canadian democracy and independence from the British Empire; William Lyon Mackenzie and his rebels fled to Navy Island where they declared the Republic of Canada. American sympathizers sent supplies on SS Caroline, which was intercepted by the British and set ablaze, after killing one American. It was falsely reported that dozens of Americans were killed as they were trapped on board, and American forces retaliated by burning a British steamer while it was in U.S. waters.