Of course, apart from the Perseus Arm and the 3,000 Parsec Arm, which were closest to the Orion Arm.
There were also the Sagittarius Arm and the Carina Arm.
Similar events were also taking place in the other two major spiral arms of the Milky Way Galaxy, the Norma Arm and the Cygnus Arm, as well as the Southern Cross Arm and the Shield Arm.
As the Four Great Spiral Arms of the Milky Way Galaxy,
whether in size or area, they far surpassed the Orion Arm.
The density of Star Systems was likewise beyond anything the Orion Arm could compare to.
Under such circumstances, their number of civilizations and overall civilization levels were naturally somewhat stronger than those of the Orion Arm.
Thus, once they developed into Civilization Alliances, the Civilization Alliances within those Four Main Spiral Arms would sweep forward with unstoppable momentum, their power exploding in near-exponential growth.
Aside from their explosive expansion, the civilizations from the Four Main Spiral Arms also had exceptionally sharp eyes.
Their intelligence capabilities were first-rate as well.
They soon all took notice of the Orion Arm, whose area was second only to the Four Main Spiral Arms.
And they had gained a preliminary grasp of intelligence regarding the Orion Arm.
While guarding against one another, the Civilization Alliances of the Four Main Spiral Arms were also wary of the Earth Civilization Alliance in the Orion Arm.
They had even begun preparing plans to invade the Orion Arm.
They had drawn up at least dozens of battle plans.
Of course, the good news was that these Civilization Alliances from the Four Main Spiral Arms
had not yet come into contact with the Heavenly God Civilizations within their own spiral arms.
They did not even know that Heavenly God Civilizations existed within their