Answer:
b. The synthesis of foreign political traditions in the formation of new states
Explanation:
During the Abbasid period, old Arab aristocracy was replaced by Persian bureaucracy, especially the Barmakid family, which was influential Iranian family in the governance of the territories. The introduction of Confucianism to Japanese political institutions was a part of infusing foreign political traditions in the formation of new states. The Abbasid rulers were intelligent to respect the local cultures and traditions in the governance of the new states. Both these elements, the Persian bureaucracy and Confucianism, help control the new states.