Strictly speaking, this was the first Trial Civilization that Human Civilization had destroyed by hand.
The Yellow Tower Civilization didn't count.
After all, the Desert Tower Civilization was destroyed during the Trial, and Human Civilization merely preempted action and then took over all the heritage of the Desert Tower Civilization.
But now was different.
There was no direct hostile relationship between the Business Alliance Civilization and Human Civilization, yet their existence indeed threatened the safety and interests of Human Civilization.
Moreover, unlike the Contract Spirit Civilization, there was no possibility of the Business Alliance Civilization becoming an affiliate of Human Civilization.
Thus, there could only be one ending.