PastlasHistorical atlas

Year

The world in 840

In 840 the atlas holds 213 states standing across 5 regions. 2 things began that year - Hungarians and Kara-Khanid Khanate - and 1 ended; 8 people were born and 3 died.

Only what Wikidata dates to the year is counted here; a thing dated to its decade is on the 840s page, and to its century on the 9th century.

What began in 840

By kind, the best known first; a war or a state is listed in the year it began.

States 2

What ended in 840

States that fell or were replaced, and wars and other things that ran past the year they began.

States 1

Born and died

By how many Wikipedias write about them.

Born in 840 8

Died in 840 3

Standing in 840

The states the atlas holds as standing that year, by region, the best known first, with who held the highest office where the record dates it.

Europe: 98 statesEurope98Middle East and North Africa: 29 statesMiddle East and North Africa29South Asia: 33 statesSouth Asia33East and Southeast Asia: 26 statesEast and Southeast Asia26Americas and Oceania: 10 statesAmericas and Oceania10Location unknown: 17 statesLocation unknown17

Europe98 states

and 88 more; every state of Europe.

Middle East and North Africa29 states

and 19 more; every state of Middle East and North Africa.

South Asia33 states

and 23 more; every state of South Asia.

East and Southeast Asia26 states

and 16 more; every state of East and Southeast Asia.

Americas and Oceania10 states

Location unknown17 states

and 7 more; every state of Location unknown.

Open in the atlas

  • On the timeline, 815 – 865: every state, war and life of 840 and the years either side, region by region.
  • On the map in 840: the borders of the year, its cities under their names of the year, and what happened where.

Wikidata (CC0) · data built 2026-10-07 · Pastlas v2.13.1, by Oleh Voronko. The published atlas and its data are for non-commercial use.