The Zarethians found some survivors though the city was in ruin. They took them under their wing and began to build on the planet. Military structures first, then prefabricated shelters. Soon there were many factories, houses, political buildings and shield defenses on the planet. It was now Zarethian as were its people. They had the choice of either becoming Zarethian citizens where they would recieve the freedoms there of or to find a new home. They had access to pocket dimensions, ships, etc. The Zarethians could make it like whatever they wanted.
The Zarethians provided for the people they found and buried those that were dead. They were kind people. There would be arguments, possibly rebellions. However, considering the options of going back to anarchy, the possibility of them joining the Zarethians was fairly high. Others, of more stout faith in their empire, which crumbled, would likely stay but incite rebellion.