Category:1820 establishments in Oceania Oceania portalHistory portal2020s portalThis category is for organizations, places and other things founded or established in Oceania in the year 1820.18151816181718181819182018211822182318241825 1770s1780s1790s1800s1810s1820s1830s1840s1850s1860s1870sSee also: Category:1820s disestablishments in Oceania Subcategories This category has the following 2 subcategories, out of 2 total. A 1820 establishments in Australia (11 P)H 1820 establishments in Hawaii (1 P)
