Once the Blaze household and their armies ceased, Michael was the only Lord in the Sacred Desert. However, Michael had to do a few things before the Will acknowledged him as the Sacred Desert's ruler.
First, Michael killed all Awakened and combatants loyal to the Blaze household. He had to eliminate potential trouble and was unwilling to leave any opportunity to stab him in the back. However, he accepted the residents of the territories nonetheless. After the Blaze household ceased, most residents chose to go with the flow. They followed Michael, who offered food, water, and a roof over their heads. That, as a matter of fact, was more than the Blaze Lords had offered on some days.
The residents moved to Paradise Valley, where more city-states were established to keep the working force in and near Paradise Valley, where the most precious resources were located.