How did Siddhartha get enlightenment?
Or
How did Siddhartha become the Buddha?
Discomposed by the sufferings of the people, Siddhartha went out into the world to seek enlightenment. Wandering for seven years, he finally sat under a fig tree and waited till the enlightenment came. His seven days long meditation yielded him Enlightenment. He renamed that tree as the Bodhi Tree (Tree of Wisdom) and began to teach and to share his new understandings. Then he came to be known as the Buddha (the Awakened or the Enlightened).