1 | 1812 | - 11 May 1812: Prime Minister, Spencer Perceval, assassinated – shot as he entered the House of Commons by a bankrupt Liverpool broker, John Bellingham, who was subsequently hanged
- 18 Jun 1812: Start of American "War of 1812" (to 1814) against England and Canada
- Oct 1812: Napoleon retreats from Moscow with catastrophic losses
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