The Buddha on the other hand, seperated himself from Hinduism, dropped away his class membership, family membership and, indeed, his membership in the human race. He became an solitary seeker, travelling with a small group of other such seekers. He thoroughly rejected his "birth religion" and found his own way. This Way is now refered to as Buddhism, but I must hasten to add that it is a mistake to think of it as an "ism" at all and if you do, you will never see it clearly. This is because Buddhism is not in a single thing about belief. It is about your own personal, individual discovery of your owm true nature and that true nature's intimate relationship to the universe, God included.
In this sense it does not fit into our western lexicon. It is both religion an philosophy, but in truth, neither. It is a set of practices, the practice of which leads to awakened living and a complete integration with all there is.
My understanding of the teachings of Siddhartha Guatama, the 'original' Buddha, are rudimentary. My experience of it is nil (and it shall remain that way) although one of my most beloved friends was quite taken up with it...to the point that whenever he was troubled irritated or something, he would rub the protruding, fat belly of his little green statue of Buddha!
In India, in the 6th c.BC, the intellectuals upheld pantheism of the Vedanta essays, karma, the reward of heaven and endless rebirths of the wicked. When the intellectual revolt set forth in the Vedanta had resulted in disintergration of thought and life, many of the masters offered a way of salvation. According to tradition, Siddhartha was one of these. He was publicly procalimed the sage and the "Enlightened", Buddha. At 29, he renounced his wife and child to seek deliverance from pain and rebirth. In 5 years of asceticism he reached the stage of emptiness and meditating under the "wisdom Bo tree", at Gaya, attained "Enlightenment" (Buddhahood)by understanding pain and the way to conquer it. Before his death, Buddha formulated his doctrine and rules for orders of monks and nuns.
The oldest writings concerning Buddha were compiled several centuies after his death, and they are full of imaginary elements. According to Buddha's own teachings, he himself has gone through various transmigrations having previously been a beggar, a lion, a bird, an elephant, a king, and various other types. He attained perfection so the legend says, and had a right to enter Nirvana, but he preferred to be born again in order to teach men the road to wisdom and to freedom from the miseries of life.
So, from this it seems fair to say that Buddhism began as a discipline for human deliverance from pain and suffering, but became mixed with various cults and sects that embraced the worship of deities (deva), dragons, snakes, as well as with magic, spells, sorcery, etc.
You say that Buddhism "is a set of practices, the practice of which leads to awakened living and a complete integration with all there is."
Again, Buddhism no nothing of God or of one's duties to God. It is based on a pessimistic view of life and is entirely self-centered. It teaches that man is not essentially different from animals, that he goes through a series of transmigrations ending practically in annihilation. While Christians believe they were created by God, and owe to God obedience and worship, serving Him in humility, and doing all for the love of Him, Buddhists, regard man as a particle in the universe whose whole aim is to escape distress, and be at peace in this world. Even charity to others is based on love of self insofar as enmity disturbs one so much interiorily. Where CHristians are saved by Christ, who is the Way, the Truth and the LIfe, BUddhists believe they need no Savior. Buddha saves no one. He indicates his way and each can attain the end by his own powers. Again, there is but one Christ for all ages. But there must be a series of Buddhas, a new Buddha appearing at the work as the work of each one fails.