Answer:
The goal of the division technique was keeping control over the whole empire as well as assuring the king's position overall.
Step-by-step explanation:
This decision was set as well to provide a certain incentive for the governors, via the reward of their excellence.
This was a smart move since the governor had to answer to the primary ruler, he had to rule his province with merit. Meanwhile, the empire would not be divided by family ties, thus ensuring its power.