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Border Drift

See the real size of every country and empire, across 4,000 years of borders.

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© Border Drift. Historical borders: to 1783, historical-basemaps by André Ourednik (GPL-3.0), corrected with Cliopatria and OpenHistoricalMap; 1800 to 1960: Cliopatria, Seshat Global History Databank (CC BY 4.0), and OpenHistoricalMap (CC0; some lines CC BY 4.0, see the data license); Europe from 1815 to 1914: HistoGIS, Austrian Academy of Sciences (CC BY 4.0). 1994 to today: Natural Earth (public domain). Non-commercial educational project.

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