Transcript
A threads post saying "There has never been another nation ever that has existed much beyond 250 years. Not a single one. America's 250th year is 2025. The next 4 years are gonna be pretty interesting considering everything that's already been said." It has a reply saying "My local pub is older than your country".
Depends on what you are counting as the start and end of a country like ours. In our current state/make up of countries, it's 103 years, when the Irish Free State left in 1922.
By that reckoning the US has only been around since 1959.