The Animated History of Poland, Part I: https://youtu.be/jV98XaAlg1o  

The Animated History of Poland, Part II: https://youtu.be/8CwFHH_y2So 

The Animated History of Poland, Part III: https://youtu.be/8P1y2v0BwnM  

Slavs-meaning and the origin of the word Slav: https://www.youtube.com/watch?v=l2_IdnpGDy4 

Biskupin- History: https://youtu.be/mc_KLJrD054