What is 1820s?
{{decadebox|182}} The '''1820s''' was the decade that began on January 1, 1820 and ended on December 31, 1829. It is distinct from the decade known as the <nowiki>'''183st decade'''</nowiki> which began on January 1, 1821. and ended on December 31, 1830. == Events == * Greek War for Independence * Much of South America declares independence from Spain. == World leaders == * Emir [[Dost Mohammad Khan]] ([[Afghanistan]]) * Supreme director [[José Rondeau]] ([[Argentina]]) * Acting supreme director [[Juan Pedro Julián Aguirre y López de Anaya]] ([[Argentina]]) * President [[Bernardino Rivadavia]] ([[Argentina]]) * President [[Vicente López y Planes]] ([[Argentina]]) * General [[Manuel Dorrego]] ([[Argentina]]) * General [[Juan Manuel de Rosas]] ([[Argentina]]) * Emperor [[Francis II, Holy Roman Emperor|Francis II]] ([[Austria]]) * Chancellor [[Klemens Wenzel von Metternich]] ([[Austria]]) * Sheikh [[Sulman ibn Ahmad Al Khalifah]] ([[Bahrain]]) * Sheikh [[Khalifah ibn Sulman Al Khalifah]] ([[Bahrain]]) * Administrative leader [[Tendzin Drugdra]] ([[Bhutan]]) * Administrative leader [[Choki Gyaltshen]] ([[Bhutan]]) * President [[Simón Bolívar]] ([[Bolivia]]) * President [[Antonio José de Sucre]] ([[Bolivia]]) * President [[José María Pérez]] ([[Bolivia]]) * President [[José Miguel de Velasco]] ([[Bolivia]]) * President [[Pedro Blanco]] ([[Bolivia]]) * President [[Andrés de Santa Cruz]] ([[Bolivia]]) * Emperor [[Pedro I]] ([[Brazil]]) * Sultan [[Muhammad Kanzul Alam]] ([[Brunei]]) * Sultan [[Muhammad Alam]] ([[Brunei]]) * Sultan [[Omar Ali Saifuddin II]] ([[Brunei]]) * King [[Ang Chan II]] ([[Cambodia]]) * President [[Bernardo O'Higgins]] ([[Chile]]) * President [[Agustín Eyzaguirre]] ([[Chile]]) * Provisional triumvirate of the three provinces [[Congreso de Plenipotenciarios]] ([[Chile]]) * Interim Supreme Director [[Ramón Freire]] ([[Chile]]) * Acting Supreme Director [[Diego José Benavente]] ([[Chile]]) * President [[Manuel Blanco Encalada]] ([[Chile]]) * President [[Francisco Antonio Pinto]] ([[Chile]]) * Preside