Each country, or civilization, has their own progress of advancement.
The strength difference today is the consequences of old times deeds.
Civilizations, juxtaposing two always see the contrasts.
The strongest today might not be the strongest tomorrow. And the weakers today might transform overnight.
Civilizations rise and falter, strong becomes weak, and loser becomes winner. Like a flame, living simultaneously volatile and energetic.
The old shall perish into dust, and the new would rise up becoming a dominant.
We don’t know who’s gonna be the next king of the world, yet.