Question

The work of saints in North India were unique give reason

Answer 1

The earliest exponent of the Bhakti movement was Ramanuja who was appointed the successor of his teacher Yamunamuni. He travelled all over India and ultimately settled down at Srirangam.

He established Vaishnavism on a sound foundation. He founded Visistadvaita Siddhanta or qualified monism and according to him, the way to salvation lies through Karma, Gyan and Bhakti. He wrote Sribasya and Gitabhasya.