Hinduism is the 3rd largest religion and dominant in India and Nepal. Its key principles include dharma (righteous living), karma (deeds and their effects on rebirth), bhakti (devotion to God), and jnana (knowledge). Karma determines one's fate based on past and present actions, with the goal of liberation from rebirth through moksha. Bhakti involves worship and devotion, while jnana yoga uses study, contemplation, and meditation to attain supreme knowledge and potentially moksha.