jesus christ, even in the old ages its a myth people thought it was flat. people had the same mental capacity as now pretty much,
How do you know, where you there?
well for example, Eratosthenes in about 200BC calculated the size of the earth, the tilt axis of the earth, etc.
Don't forget to mention Errortosthenes' calculations also work for a flat stationary Earth with a small Sun orbiting 3,000 miles above!
if you study literally any science outside of flat earth. be it geology, anthropology, astrology or even archaeology you will quickly learn the a flat earth is an outlandish solution for a problem that doesnt exist. humans are currently in the process of colonizing Mars. we have put men on the moon. we have pictures of other galaxies. and you are not sure if earth is round? there is a laser relay on the moon proving there are man made objects on the moon. if you go hiking you have probably seen the curvature of earth. why is this even a question.