Question

why do you think so much regional literature revolve around devotion especially the cult of bhakti​

Answer 1

Explanation:

we can say that it was because as we see in the north the main deities were vishnu ; shiva and goddess .And their followers were vaishvik and shivam also goddess were the main deity of tantric . While in the south deities were same but the followers were Alvars and Nayanars