How was the theoretical system of Buddhism founded?

Buddhism is the method system by which Buddha Sakyamuni's self-consciousness is enlightened from reincarnation, but we should know that although his theory is self-consciousness, many of his world views come from Brahmanism, which is the most important religious system in ancient India and the oldest mature religious culture with unearthed cultural relics. As you said, the world outlook, the concept of life cycle, the classification and difference between the material world and the spiritual world, and so on. The tenth, the concept of robbery and change, and the enlightened (Buddha) all came from the Vedic religious system. The Buddha was only influenced by this ancient culture and then reinterpreted it by borrowing words and concepts from it. Of course, after thousands of years of evolution and development, there must be future generations who have perfected and developed the theory, even reformed and sublated it. This is why a founder of Buddhism who originated in the same place will now produce many different factions, because as believers, they are all choosing theories that suit their own conditions and needs, and then their founders reinterpret them from their own positions, thus causing the complexity of the theoretical system. Religion has its own important influence on human society, so many religions have a history of thousands of years and developed with the development history of human culture. All religions have the same value and function. Just say which is the most valuable. One is that they can't be completely harmonious, and the other is that they are too limited to their own feelings.