Buddhism is a religion and philosophy that was founded in the 6th century in India by Siddhartha Gautama, who is known as the Buddha. Buddhism is based on the Four Noble Truths and the Eightfold Path, which aim to liberate from suffering and achieve Nirvana. Buddhism spread to many countries in Asia and has many schools and traditions, including Theravada, Mahayana, and Vajrayana. Buddhism emphasizes meditation, ethics, and the development of wisdom.