1821: what happened around the world

In 1821, 81 events recorded on Erask's globe began — Greek War of Independence, Adams–Onís Treaty and Peruvian War of Independence among the best known. 69 more were already under way, such as Mexican War of Independence and Caucasian War. 35 things were founded or built that year, from Greece and Peru.

81events began
69already under way
35founded or built
See 1821 on the globe →

Wars, battles and sieges60

+20 less-known, on the globe.

Revolts, massacres and attacks12

Treaties, councils and politics5

Disasters2

Accidents and fires1

Expeditions1

Already under way in 182169

Came to an end in 18214

Founded or built in 182135

+5 more, on the globe.

Stories that pass through 1821

Volcanic EruptionsEvery significant eruption on record since 1500 How America Filled UpEvery American city of 60,000 people, in the year it began NapoleonFrom Ajaccio to Saint Helena, 1769–1821

Nearby years

1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 All of the 19th century →

Every entry comes from Wikidata and links to its Wikipedia article; entries are ordered by how many language editions of Wikipedia cover them. Only things with a date are listed, and dates before the modern era are often approximate. How this is made →