Buddhism is a religion and a philosophy encompassing a variety of traditions, beliefs and practices, largely based on teachings attributed to Siddhartha Gautama, commonly known as the Buddha (Pali/Sanskrit "the awakened one"). The Buddha lived and taught in the northeastern Indian subcontinent sometime between the 6th and 4th centuries BCE.He is recognized by adherents as an awakened teacher who shared his insights to help sentient beings end suffering, achieve nirvana, and escape what is seen as a cycle of suffering and rebirth. Buddhism is traditionally conceived as a path of liberation attained through insight into the ultimate nature of reality.
Two major branches of Buddhism are recognized: Theravada ("The School of the Elders") and Mahayana ("The Great Vehicle"). Theravada, the oldest surviving branch, has a widespread following in Sri Lanka and Southeast Asia, and Mahayana is found throughout East Asia and includes the traditions of Pure Land, Zen, Nichiren Buddhism, Tibetan Buddhism, Shingon, Tendai and Shinnyo-en. In some classifications, a third branch, Vajrayana, is recognized, although many see this as an offshoot of the Mahayana. While Buddhism remains most popular within Asia, both branches are now found throughout the world. Various sources put the number of Buddhists in the world at between 230 million and 500 million.
According to the conventional narrative, the Buddha was born in Lumbini, around the year 563 BCE, and raised in Kapilavastu; both in modern-day Nepal.
Shortly after Siddhartha's birth, an astrologer visited the young prince's father, King Suddhodana, and prophesied that Siddhartha would either become a great king or renounce the material world to become a holy man, depending on whether he saw what life was like outside the palace walls.
Suddhodana was determined to see his son become a king so he prevented him from leaving the palace grounds. But at age 29, despite his father's efforts, Siddhartha ventured beyond the palace several times. In a series of encounters - known in Buddhist literature as the Four sights - he learned of the suffering of ordinary people, encountering an old man, a sick man, a corpse and, finally, an ascetic holy man, apparently content and at peace with the world. These experiences prompted Gautama eventually to abandon royal life and take up a spiritual quest.