Interesting so the oldest land animal hasn’t cracked 200 but stuff that lives in the sea can go for five or 600 years or more.
It is believed that other tortoises may have lived close to 300 years.
The greater age reached by animals living in an environment that is cold and with a constant temperature and which need a much lower average power for living (i.e. a lower energy consumption and a slower metabolism) is very much expected.
And sponges older than pyramids.
Remember the saying : in the US, 100 years is a long time; in Europe, 100km is a long distance.
You are overgeneralizing. In much of Europe plenty of architecture was erected after 1945, and most of architecture around and after 1900.
There's a cultural through line for all these countries, often stretching back thousands of years, which means that they reach further back than the definition of the modern state
The Franks made Paris their capital in the 5th century, so that still ~1100 years earlier
The Germanic people exists in records from the 1st century
Whether you can consider Spain as originating from Hispania of the Roman Empire, which would place it in the BCs, or you are more conservative and say that it doesn't count until after the reconquista from the Umayyad, we're still around the 10th or 11th century
As for Italy, we're again in BCs with the Roman empire
So yes, in comparison to many European countries, the US is a very young country
A person with a French citizenship from the fourth republic was still a French citizen when the fifth republic was established
The point was to emphasize the longevity of some animals, as for us humans the US constitution is 8/9 generations away.