Siddh?rtha Gautama was a spiritual teacher from ancient India who founded Buddhism. In most Buddhist traditions, he is regarded as the Supreme Buddha of our age, "Buddha" meaning "awakened one" or "the enlightened one." The time of his birth and death are uncertain: most early 20th-century historians dated his lifetime as c. 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. Based on archeological evidences and inscriptions, Buddha was born in Lumbini, Nepal which is a UNESCO world heritage site. He later taught primarily throughout regions of eastern India such as Magadha and Ko?ala.