804
"No nation is older than 250"
(lemm.ee)
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".
Constitutionalism is a new idea. Pioneered by America. Of course America will have the oldest until it collapses.
England? If we talk about nations that became part of other nations, venice, lots of former city states in germany are even older
England still doesn't have a constitution. It's just a pile of old laws.