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
