1840s
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| Centuries: 18th century - 19th century - 20th century | |
| Decades: 1810s 1820s 1830s - 1840s - 1850s 1860s 1870s | |
| Years: 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 | |
| Contents |
Events and Trends
Technology
- First use of anaesthesia in an operation, by Crawford Long
War, peace and politics
- First signing of the Treaty of Waitangi (Te Tiriti o Waitangi) on February 6, 1840 at Waitangi New Zealand. The treaty between the British Crown and Maori made New Zealand a British colony and is considered the founding point of modern New Zealand.
- Mexican-American War (1846 - 1848) fought between Mexico and the United States of America. The latter emerges victorious and gains undisputed control over Texas while annexing portions of Arizona, California and New Mexico.
- Wave of revolutions in Europe. Collectively known as the Revolution of 1848.
Culture and Religion
- Karl Marx writes The Communist Manifesto, first published on February 21, 1848.
Other
- Introduction of the postage stamp. The first of them is Penny Black, issued by the United Kingdom on May 1, 1840.
World Leaders
- 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 William Henry Harrison (United States)
- President John Tyler (United States)
- President James Knox Polk (United States)
- Sultan Abd-ul-Mejid I Ottoman Empirebg:1840-те
cy:1840au da:1840'erne de:1840er et:1840. aastad es:Años 1840 fr:Années 1840 it:Anni 1840 nl:1840-50 ja:1840年代 pl:Lata 40. XIX wieku ro:Anii 1840 sl:1840. fi:1840-luku sv:1840-talet zh:1840年代