Various archeological monuments and the prevalence of Baltic hydronyms indicate that by the end of the Neolithic period (), there were several closely related, at least hypothetically Baltic, cultures in Central and Eastern Europe, which were the Pamariai, (Late) Narva, and (Late) Nemunas cultures.
The presence of archaeological sites and Baltic place names throughout the region suggests that by the end of the Neolithic period, there were multiple closely related, albeit hypothetically Baltic, cultures in Central and Eastern Europe, which included the Pamariai, (Late) Narva, and (Late) Nemunas cultures.