21 March on the map of history
5 events the records the map draws date to 21 March, from 1918 to 1990. Each one opens the map on that very day.
- 1918
- 1918
The first Transjordan raid — the Hejaz railway is cut at Amman and the column has to come back over the Jordan
War record · World War I · 1918-03-21 – 1918-04-02
Open the map on this day → - 1968
- 1975
The Huế–Đà Nẵng campaign — two cities and the whole northern corps area go in nine days
War record · Vietnam War · 1975-03-21 – 1975-03-29
Open the map on this day → - 1990
The map begins drawing Namibia; the map stops drawing South West Africa (South Africa)
Border record (CShapes 2.0)
Open the map on this day →
What this page states
A border event is what the border record states about its own outlines, under the names IntMap’s map writes on that day: «the map begins drawing», «stops drawing», «new borders for». It is computed by the map’s own code, comparing the day with the day before.
A name the record does not date is not listed: the map’s table of era names is written in years, so a renaming that falls on another country’s border day is left out.
OpenHistoricalMap, which the map draws from 1689 to 1885, is not included: its dates carry no precision, and most of its first-of-the-month dates are months or years written as days.
The war record covers only the wars IntMap documents day by day (World War I, World War II, Korean War, Vietnam War, Arab–Israeli Wars, Yugoslav Wars).
Sources
CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes) · CC BY-NC-SA 4.0
Territory and dates: the documented record, compiled in scripts/wars/. Country outlines: CShapes 2.0 (Schvitz et al. 2022, icr.ethz.ch/data/cshapes).