How and where it spread.
The basic doctrines of early Buddhism, which remain the same for all Buddhism, include the "four noble truths": existence is suffering; suffering has a cause, namely craving and attachment; there is a cessation of suffering, which is nirvana; and there is a path to the cessation of suffering.
The founder of Buddhism in this world is Buddha Shakyamuni. He was born as a royal prince in 624 BC in a place in northern India but is now part of Nepal. ‘Shakya’ is the name of the royal family into which he was born. His parents gave him the name Siddhartha and there were many wonderful predictions about his future. In his early years he lived as a prince in his royal palace but when he was 29 years old he retired to the forest where he followed a spiritual life of meditation.