1800s

{| align=right cellpadding=3 id=toc style="margin-left: 15px;" |- | align="center" | Centuries:
18th century - 19th century - 20th century

|- | align="center" colspan=2 | Decades:
1770s 1780s 1790s - 1800s - 1810s 1820s 1830s |- | align="center" colspan=2 | Years:
1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 |} ==Events and Trends== * Beginning of the Napoleonic Wars (1803 - 1815). * Semaphore (communication) is adopted by navies. * United Kingdom founded in 1801 ==World Leaders== * Emperor Napoleon I of France (France) * Emperor Francis II, Holy Roman Emperor (Holy Roman Empire) * Pope Pius VII * Emperor Alexander I of Russia (Russia) * King George III of the United Kingdom, (United Kingdom) * President John Adams (United States) * President Thomas Jefferson (United States) 1800s

1800s

what is the overall review of the 1800s?

1800s

Articles and events specifically relating to the decade beginning with the year 1800 and ending with the year 1809. Note that 1800 is actually the last year of the 18th century; 1801 was the first year of the 19th century. 19th century Years by decade

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