Buddhism split in half: Mahayana emerged

(Buddha's Wisdom) Heretical new texts turn the historical Buddha Shakyamuni's Dharma (Doctrine) on its head, infusing it with the Old Vedic Religion of the Brahmins, Taoism, Hinduism, and later thought, sometimes directly opposing what Gautama Buddha taught about nirvana and samsara and many other things, including the Ten Perfections (reduced by Mahayana to six) and the 31 Planes of Existence (reduced to six)...