The number of Stellar Districts across the Milky Way is countless. The core member countries of the Star Alliance are limited to those chosen few, and of course, not every country can claim a spot—it's not even guaranteed that every Stellar District will have representation.
Therefore, to join this core competition, each Stellar District naturally needs to select the representatives from countries that can best embody their internal strength.
The projects for participation are quite straightforward...
In a scenario where large-scale wars are impossible to conduct, the only standards of this competition rely on a comparison of individual capabilities, national technologies, and resource reserves.
Mecha! It is the one solution under these circumstances.