How did india manage to exert such a significant influence on other cultures in the indian ocean basin during this era without ever establishing any long term centralized political institutions

Here is the answer to the given question above. India culture spread throughout many other cultures in the Indian Ocean basin from 600-1450. India did manage to exert such a significant influence on other cultures in the Indian ocean basin during this era without ever establishing any long term centralized political institutions perhaps due to the sharpness of the cultural divide between Islam and Hindu. Hope this answers your question.