What caused the Neolithic Decline in Europe? Was it the first great plague in history? And if so, did it cause a Neolithic apocalypse?

In the 4th Millennium BC, Neolithic Europe experienced a sustained decline. By about 3000 BC Western Steppe Herders like the Yamnaya and related groups migrated west into Europe, changing the genetics and culture forever, and bringing about the Bronze Age.

The male lineages of Neolithic Europe came to an end as the steppe herders had offspring with the Neolithic farmer women. Did this only happen because the settled farmers had already been brought to their knees by waves of plague?

In this video we look at the first recorded samples of the plague - Yersinia Pestis - the same bacterium that caused the Black Death and the Plague of Justinian and Bronze Age plagues.

Did the disease first become dangerous in the vast proto-cities of the Cucuteni-Trypillia culture in Eastern Europe?