When setting up these 100 "Hub Planets," the Holy Silver Civilization did not choose habitable planets that had already developed civilizations, but rather, they chose barren planets that were in the habitable zone but devoid of any vegetation.
For instance,
if a Hub Planet was to be established in the Solar System, but Blue Star already had life, they would not choose Blue Star.
According to the style of the Holy Silver Civilization, they would turn Mars into a "Hub Planet."
The main reason was to start from scratch, to construct from the ground up.
At first, these Hub Planets were desolate with no living creatures.
The Holy Silver Civilization spent a considerable amount of time and effort, using greenhouse gases to modify the planets, eventually turning them into habitable worlds.
