1. Darius thought it would be a good idea to choose 120 satraps to rule throughout his kingdom.
2. He chose three men to rule over the 120 satraps. Daniel was one of the three supervisors. The king put these men in this position to keep anyone from cheating him.
3. Daniel proved himself to be a better supervisor than any of the others. He did this by his good character and great ability. The king was so impressed with Daniel that he planned to make him ruler over the whole kingdom.