Who in the catholic church in Europe believed in and promoted the flat earth concept at the time of Columbus?

Question

where can I find a web site that high light this idea? and it orgin in europe between 1200 to 1500 a.d?

Answer 1

Out of curiosity, where did you get this idea?

The Catholic Church never officially taught "flat earth" theory. There may have been some cleric some place and somewhere that taught this, but never the Church. The understanding of the earth being round comes out of Greek antiquity and they had calculated (quite accurately I might add) the circumference of the earth. The clerics who were educated in the classical studies (as was the case in the medieval schools) knew this.

The understanding of "flat earth" comes out of the myths of antiquity. Scripture itself (particularly Genesis), as it is written in ancient language of the time, uses language that is pulled from an understanding of a flat earth. "Flat earth" can also be found in the myths of pre-Christian Europe, which still were known in the middle ages.

What you are looking for and what you want to talk about for a dominant medieval understanding of cosmology is the

Music of the spheres / music of the universals / musica universalis

Just google search it.

However it should be noted that a heliocentric universe was known and taught prior to Galileo, and that the Catholic Church never has nor never will take an offical position on matters of scientific theory (that are true science and informed by faith).