> What other gov’t during the same time period has lasted as long or longer (none that I am aware of), let alone has produced prosperity, etc. to the same extent?
The constitutional system of the United Kingdom is over 1000 years old.
The constitutional system of the United Kingdom is over 1000 years old.
Including the Sovereign, or Parliament.
It has kept the title, but so has France and how many Republics are they on now?
The US has also kept the title of the Senate, but I'd argue that it's been a very different institution since the 17th Amendment. Also, the Federal govt. until the Great Depression was much more hands-off (witness the overuse of the Commerce Clause since then.)
I'm not sure that the Founders would think of the present-day Republic as the same as theirs.