How Wikipedia coverage shapes the history map
Annalium is built from Wikidata and Wikipedia, so its density mirrors theirs — denser in Europe and after 1500, thinner everywhere else.
Annalium does not decide which events matter. It draws on Wikidata for the events and Wikipedia for the summaries, pulled and pre-indexed nightly rather than queried live. That choice gives us a vast, openly licensed, continuously improving dataset — but it also means Annalium inherits Wikipedia's shape exactly. Where Wikipedia is rich, the map is crowded with markers. Where Wikipedia is thin, the map is nearly empty, and that emptiness is not the same as nothing having happened.
The bias is real and worth naming plainly. Coverage skews toward Europe, toward military and political events — the categories we label "Conflict" and "Politics" — and toward the centuries after 1500, when print, archives, and the editors who write Wikipedia today all multiply. Many regions and long stretches of time are sparse not because they were quiet, but because of who got to write history down, which records survived, and which language communities are large and active on Wikipedia now. The silences on the map are themselves a kind of evidence about how historical memory is built and preserved.
We would rather show you that unevenness than paper over it. An empty quarter of the map is an honest prompt: ask why the sources are thin there, and treat a dense cluster as a sign of attention, not necessarily of greater importance. Every event links back to the Wikipedia article it came from, so you can follow any marker to its source, judge it yourself, and even improve the underlying record. Try a wide view across Afro-Eurasia in the early medieval centuries and watch how density shifts as you pan and change the era.
More guides
- What was happening around the world in 750 CE?
- What was happening while the Tang dynasty was at its height?
- What was happening when Baghdad was founded?
- What was happening during the Mongol Empire?
Events from Wikipedia/Wikidata (CC-BY-SA); boundaries from OpenHistoricalMap (ODbL). Spotted a mistake? Email [email protected].