Texas Afghanistan portalHistory portalGeography portalThis category is for topics specifically related to the year 1840 in Afghanistan. 18221823182618341839184018411842185618571862 1790s1800s1810s1820s1830s1840s1850s1860s1870s1880s1890s Subcategories This category has only the following subcategory. F First Anglo-Afghan War (2 C, 11 P)