Back in the past if a person suggested the Earth was round, he/she would have been called a fool. But when knowledge arrived and proved it was not flat, but indeed round, then those who were once called a fool, were no longer called that.
The ancient Greeks knew the Earth was round because we have an horizon. They even calculated the circumference of the Earth with a fair degree of accuracy.
It meant that a voyage around the World to China would have been impossible because the distance would have been too great for sailing ships.
Columbus said the Greeks were wrong, that the Earth was a lot smaller and therefore navigable. He was wrong, the Greeks were right, but nobody in Europe was aware of the Americas.
That’s why the Caribbean islands were named the West Indies.
i don't understand why the history lesson given, how it relates to what i said above. i am clearly talking about a time when people thought the Earth was flat, not a time which they believed it was round.
If as you say the ancient Greeks knew it was round, then i am referring to a time prior to the Greeks. i started out by clearly saying "Back in the past", so it would be prior to when they believed the Earth was round.
Don't get me wrong, i am not disagreeing with your assessment of the Greeks, only saying that i am not talking about a time when people believed it was round, but back in the past when MOST believed it was flat, which would be prior to the GREEKS, who you say believed it was round.