Map of Southeast Asia in 1840
On 1 July 1840, IntMap’s historical map draws 35 names within Southeast Asia. The borders for this date come from OpenHistoricalMap (day by day), then Cliopatria, Seshat Global History Databank (by year), then historical-basemaps — each drawn only where the records before it are silent.
Names on the map
As the map labels them, largest first by the area of the outline drawn inside this view. Areas are of the drawn outline, rounded, and approximate.
| Name | Drawn area in view (km²) |
|---|---|
| Dutch East Indies | 2,250,000 |
| Rattanakosin Kingdom Mandala | 904,000 |
| Đại Nam | 492,000 |
| Qing | 484,000 |
| Burma | 428,000 |
| Spanish Philippines | 343,000 |
| Captaincy General of the Philippines | 343,000 |
| Company Raj | 143,000 |
| Sultanate of Sulu | 107,000 |
| Malaya | 85,100 |
| British Empire | 69,400 |
| Sultanate of Maguindanao | 64,900 |
| Sultanate of Johor | 63,700 |
| Sultanate of Brunei | 48,200 |
| Portuguese Timor | 47,800 |
| J'rai | 35,100 |
| Sultanate of Perak | 24,100 |
| British Colonial Empire | 17,800 |
| Sultanate of Terengganu | 14,900 |
| Sultanate of Selangor | 11,800 |
| Rattanakosin Kingdom | 11,200 |
| Kingdom of Luang Phrabang | 10,500 |
| Kelantan | 8,610 |
| Sarawak | 8,190 |
| Negeri Sembilan | 5,930 |
| Chiangmai | 3,310 |
| Arakan | 2,440 |
| Confederate States of Lanao | 2,060 |
| Papou | 1,720 |
| Assam | 1,370 |
| French Tourane | 590 |
| Manipur State | 472 |
| Colony of New South Wales | 471 |
| Ryukyu Kingdom | 3.13 |
| Tokugawa Shogunate | 3.13 |
What changed since 1839
Now drawn
none
No longer drawn
Đại Việt
The same date elsewhere
World map · 1840 Map of Europe · 1839–1840 Map of the Middle East · 1840–1845 Map of Africa · 1840 Map of South Asia · 1840–1842 Map of East Asia · 1840 Map of Central Asia · 1840–1845 Map of North America · 1840 Map of Central America and the Caribbean · 1840 Map of South America · 1840 Map of Oceania · 1840
Source and method
Borders and names: OpenHistoricalMap (openhistoricalmap.org) · CC0 1.0 + Cliopatria v0.2.1 (Seshat Global History Databank, github.com/Seshat-Global-History-Databank/cliopatria) · CC BY 4.0 · adapted by IntMap: simplified, BC years made astronomical, and the ground OpenHistoricalMap (1689–1885, and from 1886 where CShapes is silent) and CShapes (1886–2019) state removed on their own dates + aourednik/historical-basemaps (github.com/aourednik/historical-basemaps) · GPL-3.0 · adapted by IntMap: each sheet before 1886 less the ground OpenHistoricalMap and Cliopatria state at that sheet's year.
Listed: every name whose outline IntMap draws inside 92°E–141°E, 11°S–24°N on this date, with the name the map writes on it. The list is worked out when the site is built, from the same records and the same code the map uses, so it says what the map shows — not more. Names are the source’s own, translated where the source or IntMap’s name table has a translation.