My comment is too old to edit, but I would like to issue a correction. I should not have written "This article estimates that the US is the #2 longest-lasting republic after the Roman Republic", since the caption for the figure in the article states something different ("Duration of Long-Lived Democracies", i.e. the word "democracy" is used rather than "republic", and also there wasn't a claim to "longest-lived")

Never trust internet comments!