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Flag of the Soviet Union
СССР · Public domain
Polity

USSR

1920 CE – 1991 CE · 71 years

Country in Eurasia from 1922 to 1991

Wikipedia

The opening of the article, and a way into the rest of it without leaving the site.

Soviet Union on Wikipedia.

How these dates were made

Real dates from Wikidata, checked against the atlas.

These are real dates: USSR's founding and dissolution are recorded in Wikidata, and accepted here only because they agree with the centuries the atlas independently drew it in. The atlas itself draws the world at 4 moments in time, not continuously. The strip below covers those snapshots — 1920 CE to 1960 CE — which sits inside the fuller span above.

1920 CE 4 snapshots 1960 CE

Running at the same time

Records whose own span overlaps this one, found by the same test the canvas draws with. The bar under each card is where it sits inside this one.

See the whole view
Image credits9 pictures from Wikimedia Commons