1840s
Centuries: 18th century - 19th century - 20th century
Decades: 1790s 1800s 1810s 1820s 1830s - 1840s - 1850s 1860s 1870s 1880s 1890s
Years: 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849
Events and Trends
- Karl Marx writes The Communist Manifesto
- Mexican-American War
- Revolutions in Europe
- Introduction of the postal stamp
- Emperor Ferdinand I (Austria)
- Chancellor Klemens Wenzel von Metternich (Austria)
- Emperor Franz Josef (Austria-Hungary)
- King Louis-Philippe (France)
- Pope Gregory XVI
- Pope Pius IX
- Emperor Nicholas I (Russia)
- Queen Victoria (United Kingdom)
- Prime Minister Lord Melbourne (United Kingdom)
- Prime Minister Sir Robert Peel (United Kingdom)
- Prime Minister Lord John Russell (United Kingdom)
- President Martin Van Buren (United States)
- President John Tyler (United States)
- President James Knox Polk (United States)