Practice tools › When the Mekong became a border: 1887–1946 and today
When the Mekong became a border: 1887–1946 and today
Step through the treaties: the 1893 Paknam crisis, the 1896 declaration, the 1904 convention that drew a line beside Nan, 1907, the 1926 islands rule, 1941, 1946 and today. The map shades only areas whose extent the sources state, and 13 town dots show which side each was on, with Kham Mueang words and sources at every step.
How to use it
Drag the time slider, use ‹ › or press ▶. Tap a town dot or a row for details, tap 🔍 to zoom in on Lanna and Nan. The grid shows every town at every step; tap a cell to jump there. Then try the "Which side?" game below.
What it teaches
That the Mekong was not always a dividing line: the Laos–Thailand border was built treaty by treaty, Nan's right-bank towns such as Muang Ngoen went to the French side in 1904, and the river islands lie on the Lao side.
Options
| Option | Values | Meaning |
|---|---|---|
| opening year | The 1893 crisis · The 1904 line beside Nan | The step opened at the start (omitted = 1887) |
| selected town | Muang Ngoen · Nan | The town highlighted at the start |
| zoom | Zoom to Lanna and Nan | Open zoomed in on Lanna and Nan (omitted = the whole Mekong) |
Used in articles (1)
- Lanna and France: 1893 and the Mekongล้านนากับฝรั่งเศส: ๑๘๙๓ และแม่น้ำโขง
opening year: The 1893 crisis
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