Ewa Rawicz – Slavs for 10700 years in Europe

For a long time we’ve been learning at school about Poland
as being the cradle of Poles and Slavs. In recent years, the
hypothesis was that Slavs came to Europe in the 6th
century, and suddenly created a strong Piast state
… out of nothing.

https://www.youtube.com/watch?v=UeZsf9sZPKM&t=8s