A. The Indus River Valley civilization developed an advanced urban society with carefully planned cities along the Indus River between 2500-1500 BCE.
B. The Aryans later invaded and conquered the Indus Valley, establishing the Hindu caste system and Sanskrit language. Hinduism and Buddhism both originated in the region.
C. Hinduism focused on dharma, karma, and achieving moksha through reincarnation. Buddhism, founded by Siddhartha Gautama, taught that suffering can be ended by eliminating desire through meditation and following the Eightfold Path.