Complex sentence: In Jewish tradition, the middle-eastern peoples of Amalek migrated to Ancient Persia (modern day Iran) and then gradually to what is today Austria and Germany to become the driving seed of hatred for Jews in Nazi-Germany.
Split into simpler sentences: In Jewish tradition, the middle-eastern peoples of Amalek migrated to Ancient Persia (modern day Iran) and then eventually to Austria and Germany. They become the driving seed of hatred for Jews in Nazi-Germany.