Question

what are Swami Vivekananda's achievements?

Answer 1

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He wrote four classics, Jnana-Yoga, Bhakti-Yoga, Karma-Yoga, and Raja-Yoga, which are his treatises on Hindu philosophy and the teachings of Vedanta. In addition, his ideas and philosophy come through in the many lectures he delivered, the letters he wrote to friends and disciples, poems and songs composed by him.