Who first discovered the earth was round?

One would come up with many answers. Wikipedia states: "The concept of a spherical Earth dates back to ancient Greek philosophy from around the 6th century BC.....etc." But wait!

The very word Bhugola for earth shows that ancient Indians knew that earth was round. 'Bhu' means earth while 'Gola' means round.

This must obviously be before the word 'Bhugol' was composed which is being used in India from thousands of years.

Isn't it amazing?