Assalam O Alaikum!

My Sheikh, MashAllah, told me that there is a law of nature that no matter how much a country made a progress but there would be a downfall too. Like, we born then we become young after that we become old too and then die. Same is the case with the progress of any country.

Like, currently USA is the SuperPower so there downfall would come too and then China will rise and their downfall, after that India.

In the past;
Soviet Union
British Empire
Mughal Empire
Ottoman Empire
Mongol Empire
Islamic Golden Age
Alexander The Great

JazakAllah!