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Date |
Event(s) |
| 1 | 1801 | - 4 Mar 1801—3 Mar 1809: Thomas Jefferson, 3rd President of the United States
 Thomas Jefferson
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| 2 | 1804 | |
| 3 | 1805 | - 1805: London docks opened
- 21 Oct 1805: Admiral Nelson's victory at Trafalgar
- 2 Dec 1805: Battle of Austerlitz; Napoleon defeats Austrians and Russians
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| 4 | 1806 | - 1806: Dartmoor Prison opened (built by French prisoners)
- 9 Jan 1806: Nelson buried in St Paul's cathedral, London
- 11 Feb 1806—31 Mar 1807: William Wyndham Grenville, 1st Baron Grenville, UK Prime Minister (Whig)
 William Wyndham Grenville, 1st Baron Grenville
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| 5 | 1807 | - 25 Mar 1807: Parliament passes Act prohibiting slavery and the importation of slaves from 1808
- 31 Mar 1807—4 Oct 1809: William Bentinck, Duke of Portland, UK Prime Minister (Whig)
 William Bentinck, Duke of Portland
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| 6 | 1808 | - 1808: Gas lighting in London streets
- 13 Jul 1808: 'Hot Wednesday'
- 20 Dec 1808: Beethoven premieres his Fifth Symphony, Sixth Symphony, Fourth Piano Concerto and Choral Fantasy together in Vienna
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| 7 | 1809 | - 12 Feb 1809: Birth of Charles Darwin
- 4 Mar 1809—3 Mar 1817: James Madison, 4th President of the United States
 James Madison
- 18 Sep 1809: Royal Opera House opens in London
- 4 Oct 1809—11 May 1812: Spencer Perceval, UK Prime Minister (Tory)
 Spencer Perceval
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| 8 | 1810 | - 1810: John McAdam begins road construction in England, giving his name to the process of
road metalling
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| 9 | 1811 | - 5 Feb 1811: Prince of Wales (future George IV) made Regent after George III deemed insane
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| 10 | 1812 | - 11 May 1812: Prime Minister, Spencer Perceval, assassinated
- 8 Jun 1812—9 Apr 1827: Robert Banks Jenkinson, Earl of Liverpool, UK Prime Minister (Tory)
 Robert Banks Jenkinson, Earl of Liverpool
- 12 Jun 1812: War of 1812
- 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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