Legality of Cannabis by U.S. Jurisdiction Illinois portalUnited States portalHistory portal This category is for topics specifically related to the year 1846 in the U.S. state of Illinois. 18411842184318441845184618471848184918501851 1790s1800s1810s1820s1830s1840s1850s1860s1870s1880s1890s Subcategories This category has the following 2 subcategories, out of 2 total. / 1846 establishments in Illinois (17 P)E 1846 Illinois elections (4 P)