Siddhartha Gautama was a young prince that lived in the 6th century BCE. When Siddhartha was a baby wise men predicted he would either be a great prince, or a great spiritual leader. Since his father disliked the latter he kept his son in a palace for all his life to prevent him from seeing outside suffering.
One day, Siddhartha wanted to leave the palace so he went with his tutors son for a stroll down the street. On his walk Siddhartha encounters a sick man and asks his tutor "Can this happen to me" his tutor replies "Yes It could happen to any of us" Siddhartha then sees a Dead and old man and asks the same question and received the same answer. After seeing all this suffering Siddhartha leaves the palace walls forever.
After leaving the palace Siddhartha went to a cave and prayed for days on end with scarce food and water, searching for the answer to life. After many months Siddhartha realizes, starving himself will not bring him answers so he leaves the cave still searching for the meaning of life
After leaving the cave, Siddhartha sat under a Bodhi tree and said "I will not leave until I find what I am looking for." And that is what he did, he sat, no longer starving himself and he sat for days.
One day, seated beneath the Bodhi tree (the tree of awakening) Siddhartha became deeply absorbed in meditation, and reflected on his experience of life, determined to penetrate its truth. He finally achieved Enlightenment and became the Buddha, in doing so he learned about The 4 Noble Truths, The Eight fold Path, And the Middle Way.
Since Buddha was not sure if he should teach what he has learned, Hindu god Brahma persuades him to teach. After his death, his pupils decide they will follow no god, and soon Buddhism spread across the world teaching anyone from any background, anyone who wanted to could learn the way of the Buddha The 4 Noble Truths, The Eight fold Path, And the Middle Way.