Two hundred fifty years is a long time for a republic, and the country spent the weekend celebrating it - fireworks, flyovers, and, from the Mount Rushmore stage on Thursday night, a superlative: "At 250 years, America is the oldest republic on earth" [1][2].

There is a republic in Europe that was already old when the Bill of Rights was drafted. San Marino, the small state on a mountain in northern Italy, dates its founding as a self-governing community to the year 301, during the reign of Diocletian, and has governed itself as a republic continuously since - its Statutes of 1600 are still in force [3]. Even historians who discount the founding legend and date its institutions to the 1200s leave it roughly five centuries ahead of Philadelphia in 1776 [3].

Age of the republic
San Marino, by tradition since AD 3011,725 yearsUnited States since 1776250 years
San Marino has governed itself as a republic since late antiquity - even skeptical dating from its medieval statutes leaves it centuries older than 1776. [3]
Data
San Marino, by tradition since AD 3011,725 years
United States since 1776250 years

The frustrating part is that America holds a real superlative in this exact category, and it was sitting right there: the United States Constitution is the oldest written national constitution still in force anywhere in the world. That claim is true, it is distinctly American, and it says something the inflated version does not - that the thing we built on paper in 1787 outlasted every constitution written since.

It matters beyond trivia because of where it was said and what traveled with it. The same stage produced a $19.2 trillion investment claim that is 83 times the government's own count minutes earlier. When the checkable birthday-card facts get inflated, audiences learn to discount everything from that podium - including the true superlatives. That cost lands on the country being celebrated, not on the man claiming it.

The same speech made claims that check out - the most Olympic medals, the most Nobel laureates - and we note them because accuracy cuts both ways. A 250th birthday is remarkable without borrowing San Marino's. The republic is old enough to be told the truth about its age.