Of course, the root cause was the change in the international balance of power.
During the eight-year grueling war that followed, the Empire faced not only Boi Country but also the Newland Republic.
From this perspective, even if the Empire hadn't suffered setbacks in Boi Country, it would have faced a disastrous defeat in other places, such as Mexico, which is closer to the Newland Republic.
Simply put, with the rapid rise of the Newland Republic as the third global power, the Empire's strategic expansion had reached its limit.
From strategic expansion to strategic contraction was inevitable.
Fundamentally, the decline after reaching the peak is an inevitable end for any strong empire.
