Absolutely right. Nobody really wanted to sponsor Columbus because they already knew how big the globe was, and that Columbus' proposed expedition would run out of supplies before he got to east Asia by going west - because they were unaware of the Americas existing.
The earliest globe that still exists was started in 1490, and finished in 1492, the very year that Columbus set sail. Columbus didn't return to Spain until March 15, 1493.
teft@startrek.website 1 year ago
At least 800 years before that, maybe more. Eratosthenes calculated Earth’s circumference around 240 BC. I would assume you have to believe the Earth is round is if you’re measuring a circumference.