Borders dataset for year —. Borders are based on
Historical Basemaps
by Andrei Ourednik et al., licensed under
CC-BY 4.0.
Borders for medieval and early-modern periods are scholarly approximations — political reality on the ground was often messier than any line on a map can show.
Ruler and era data is drawn from the Rulers page and Project White Eagle research.
Press F for fullscreen, I to toggle the era panel, Esc to exit fullscreen, ← → to scrub.