article: List of countries in the 1840s
links: Second French Republic Kingdom of the Two Sicilies Sikkim Saxe-Altenburg Duchy of Nassau Joseon Saxe-Coburg-Gotha Hohenzollern-Hechingen Konbaung dynasty Grand Duchy of Oldenburg Grand Duchy of Tuscany Qajar Iran Hyderabad State Kingdom of Portugal Nicaragua Saxe-Meiningen Perak Manipur Kingdom Coburg Rattanakosin Kingdom (1782–1932) Kingdom of Hanover Kingdom of Saxony Kingdom of Kongo Bremen Nguyễn dynasty Free City of Lübeck Gotha Kingdom of Württemberg Kingdom of Greece Peru Emirate of Bukhara July Monarchy Kingdom of Nepal Dahomey Switzerland Russian Empire List of sovereign states in the 1830s Bhutan Kingdom of Sardinia El Salvador Qing Dynasty List of sovereign states in the 1850s Kingdom of Denmark Samoa Moldavia Kingdom of Koya Guatemala Tokugawa shogunate Saxe-Weimar-Eisenach Sikh Empire Hungarian State Grand Duchy of Hesse Bulawayo Bornu Empire Copenhagen Union between Sweden and Norway Pahang Fiji Grand Duchy of Baden Hohenzollern-Sigmaringen Flensburg Selangor