“In the Longer Sukhavativyuha Sutra, the Buddha begins by describing to his attendant Ananda a past life of the buddha Amitabha. He states that in a past life, Amitabha was once king who renounced his kingdom, and became a bodhisattva monk named Dharmakara ("Dharma Storehouse").Under the guidance of the buddha Lokesvararaja ("World Sovereign King"), innumerable buddha-lands throughout the ten directions were revealed to him. After meditating for five eons as a bodhisattva, he then made a great series of vows to save all sentient beings, and through his great merit, created the realm of Sukhavati ("Ultimate Bliss"). This land of Sukhavati would later come to be known as the Pure Land in Chinese translation. The sutra describes in great detail Sukhavati and its inhabitants, and how they are able to attain rebirth there. The text also provides a detailed account of the various levels and beings in the Mahayana Buddhist cosmology. The sutra also contains the forty-eight vows of Amitabha Buddha to save all sentient beings. The eighteenth vow is among the most important as it forms a basic tenet of the Pure Land school. This vow is most commonly known as shi nian bi sheng yuan, because it states that if a sentient being makes even "ten recitations" of the Amitabha Buddha's name they will attain "certain rebirth" into the Pure Land. Lastly the sutra shows the Buddha discoursing at length to the next Buddha to come, Maitreya, describing the various forms of evil that Maitreya must avoid to achieve his goal of becoming a Buddha, as well as other admonitions and advice.” - Wikipedia
Gautama Buddha (Sanskrit: गौतम बुद्ध) born as Prince Siddhārtha (Sanskrit: सिद्धार्थ) was a spiritual teacher from the Indian subcontinent, on whose teachings Buddhism was founded.
Gautama is the primary figure in Buddhism, and accounts of his life, discourses, and monastic rules are believed by Buddhists to have been summarized after his death and memorized by his followers. Various collections of teachings attributed to him were passed down by oral tradition, and first committed to writing about 400 years later.
The time of Gautama's birth and death is uncertain: most historians in the early 20th century dated his lifetime as circa 563 BCE to 483 BCE, but more recent opinion dates his death to between 486 and 483 BCE or, according to some, between 411 and 400 BCE. However, at a specialist symposium on this question held in 1988 in Göttingen, the majority of those scholars who presented definite opinions gave dates within 20 years either side of 400 BCE for the Buddha's death, with others supporting earlier or later dates. These alternative chronologies, however, have not yet been accepted by all other historians.