This episode was inspired by recent study that was conducted by Columbia University and published in the journal, Nature Communications. The researchers found that all Ashkenazi Jews are descended from a 350 person “bottleneck” that occurred a mere 600 to 800 years ago.
The idea seems incredible, that the origins of such a large and successful segment of the Jewish people could be so recent. But the science corresponds perfectly with the history. In 1244 the process of creating an agreement began and in 1264 the "Charter of Boleslav" was signed. The Jews of Western Europe were invited to run the business of the Polish princes. The charter guaranteed certain rights and protections for the Jews and resulted in a long period of prosperity and growth in Eastern Europe.