The Weird History Podcast
217 The War of 1812 Part Two: Other Causes
British impressment of American sailors and restrictions on maritime trade are only part of the story in the run-up to the War of 1812. Another major factor was American expansionism. The British, at the time, were supplying munitions to Native American populations in the Old Northwest who were violently resisting American expansion, and a war with Britain could, potentially, cut off that support. Also, lots of Americans wanted to take over Canada.