America almost made it to 250 years.
Some are saying that the damage done by trump & those MAGA devils will take decades to repair, but it will come back.

I say that it is unlikely that it will.
From a historical perspective, it's more likely that the end of the American empire is near.

You ever heard of the Parthian Empire?
The average person has no idea what it was, but it was a significant rival to Rome (which our civilization is based upon, from bottom to top).

The Parthian Empire lasted 471 years, (247 BC–AD 224), and was a major political and cultural powerhouse centered in ancient Iran. Founded by Arsaces I, leader of the nomadic Parni tribe, it dominated the Near East for nearly five centuries and served as one of Rome's most formidable rivals.

Everything ends.
All thimgs must pass, and, as hard as this may be for some to swallow, in about 500 years, the average person will not be able to remember a single thing about the United States of America.

I'm pretty sure Iran, India, and China will still be around, and Africa will be the world's powerhouse.