1840s

Centuries: Year in Review 19th Century (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

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Events and Trends

• Karl Marx writes The Communist Manifesto