However, the civilization levels can be simply categorized into low-level civilization, mid-level civilization, and high-level civilization.
Low-level civilizations cannot achieve interstellar travel by their own means. Previously, Byron Star belonged to a low-level civilization, needing alien power to traverse planets.
One of the hallmarks of a mid-level civilization is the ability to conduct interstellar travel and engage in interstellar warfare. Therefore, planets possessing warp engine technology, capable of space jumps and having warships, are called mid-level civilizations.
Planets that are relatively powerful within the Star System Alliance are considered mid-level civilizations.
Mandala Star, as Zero's mother puts it, belongs to the upper echelon of mid-level civilizations.
As for high-level civilizations, they possess star annihilation ability.
