Bosnian identity is shaped by three constituent peoples who have lived alongside each other for centuries — Bosniaks (the South Slavic Muslim community), Bosnian Serbs (Orthodox), and Bosnian Croats (Catholic) — together with smaller Jewish, Romani, and other communities. All three share a deep South Slavic base layered over the earlier Illyrian, Roman, and Late Antique populations of the central western Balkans.
Here's the honest dataset position: the source database holds only one quality-passing ancient sample from modern Bosnia and Herzegovina — a single medieval individual. For ancient-DNA purposes, Bosnian heritage from any of the three backgrounds connects to the same archaeological horizons as Croatian and Serbian ancestry.
We represent that honestly. We extend the Croatian map into Herceg-Bosnia (the historically Croat-majority western region) and the Serbian map into Republika Srpska (the Serb-majority entity). That gives Bosnian users a meaningful regional placement while making no claim the data can't support.