Why did shi huangdi chose legalism as the philosophy to rule the newly united china?

The reason why Shi Huangdi chose Legalism as the philosophy to rule the newly united China is because this allowed for the most pragmatic and "easy to follow" order of rule--thus making uprisings less likely. 

Just think, why was it effective? -it appeled to critics because it was written well, that made it noticeable to the public including the white population-it was also recognizable to the african americans because it was about their heritage.-it was powerful just keep finding more points and elaborate on them. message me if you need more