After a long and meticulous analysis, the scholar drew a conclusion.
There are three main reasons.
First, after humans left Earth, they no longer viewed themselves based on skin color, birthplace, language, religion, and so on, which could cause internal divisions. Instead, they all referred to themselves as Earth Humans. Under the guidance of the same core concept of being human, they jointly dealt with the same powerful enemy. At this time, the relatively dominant culture that met the needs of the human community emerged and became the main body of civilization. With the same main body, facing the same enemy from another race, all of humanity inherited the same potential for war.
Second, the power of the Destiny Covenant Mark.