1. Darius thought it would be a good idea to choose 120 governors. They would rule through all of his kingdom.
2. And he chose three men as supervisors over those 120 governors. Daniel was one of these three supervisors. The king set up these men so that he would not be cheated.
3. Daniel showed that he could do the work better than the other supervisors and the governors. Because of this, the king planned to put Daniel in charge of the whole kingdom.