This is pretty idiotic - every child in any school system in the last hundreds to thousands of years (depending on era and such) have had the basic understanding of the earth being a sphere. Its circumference was first calculated by Eratosthenes back in 250 B.C. and he was remarkably accurate. You can repeat his experiments today - (360° ÷ θ) x (s) - That and we have been over around under and all the earth quite a bit over the last 50 years. Although scientifically proven and easily observable with only a grade-school education today you can go ahead and cover your eyes and plug your ears and take up the flat earth flag. I'd recommend watching some SciManDan if you're at all thinking the earth isn't round. And I haven't yet seen any "international treaty" garbage supporting what you say - there is one from 1959 that was initially 12 countries that basically officially states that Antarctica should be a natural reserve devoted to "peace and sciense" and its up to 50 now. Don't get me wrong here though - calling you out on flat-earth nonsense doesn't mean I don't buy into some related conspiracies... but then again most on here do as well in regards to global-warming hoax. I like the reports recently of zero change in average temperature in Antarctica in last 70 years... but that is a direct deep state talking point... whereas people from all political walks of life (be it Ultra-MAGA, deep-state, blind sheep, etc.) can unite in the heckling of flat-earthers.