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Centuries: 18th century - 19th century - 20th century Decades: 1750s 1760s 1770s 1780s 1790s - 1800s - 1810s 1820s 1830s 1840s 1850s Years: 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809 Events and Trends Napoleonic Wars Semaphore is adopted by navies World Leaders Emperor Napoleon I (France) Emperor Francis II (Holy Roman Empire) Pope Pius VII Emperor Alexander I (Russia) King George III, (United Kingdom) President John Adams (United States) President Thomas Jefferson (United States)
Centuries: 18th century - 19th century - 20th century
Decades: 1750s 1760s 1770s 1780s 1790s - 1800s - 1810s 1820s 1830s 1840s 1850s
Years: 1800 1801 1802 1803 1804 1805 1806 1807 1808 1809
World Leaders