Answer:
Poland, Lithuania, and Ukraine
Explanation:
In the 18th century, the Jewish population concentrated in countries like Poland, Lithuania, and Ukraine in Europe. During the end of the 17th century, Poland had the highest number of Jews. Today, the majority of Jews across the world could follow their ancestry to this region. During the Polish–Lithuanian Commonwealth, Jews were 50 % of the urban population. Jews enjoyed extensive freedom and economic prosperity.
