Seeing dragon-esque figures in Ancient Chinese paintings and such is not uncommon.
So how could this have been possible for these undeniably different cultures to develop the same idea?
Occam's Razor may seem to answer : dragons really do exist!
Jung, student of pronounced teacher Sigmund Freud, believed that humans have not only a personal unconscious but also a collective one. Meaning this : human beings have not only a personal unconscious (most people think of only their personal unconscious), but another set of ideas humans are naturally inborn with, perhaps even genetically.
Humans all are born with similar traits, most usually two arms, two legs, etc… why could we not also be born with some similar ideas?
Dragons are not the only items that have appeared in different places independently.. The Nazi Swastika is almost identical to a Buddhist symbol for peace, neither knew the other until much later.
Look into Jung's essay 'The Personal and Collective Unconscious'.
Paper
It has to do with the culture and traditions of every civilizations around the world since the beginning of documentations.
I believe in Nubia and Ethiopia. According the World Civilizations AP Edition.
There are pyramids in Egypt and South America from different civilizations.
the Islams and the christians
Knights and wizards often fight with dragons. Dragons are a mythological creature which have been found in various cultures around the world. Most of the time, knights are the ones doing battle with dragons using magical weapons.
they traded among many ancient civilizations around the world
The komodo islands on Indonesia have the most dragon's. there called komono dragons
Bearded Dragons are native to Australia where they originally came from. They love the inland deserts but are also found along the east coast as well. The Germans took some Bearded Dragons and began breeding them and morphing them into different varieties which can now be found around the world. Bearded Dragons pets are very popular around the world especially in the UK and United States.
Dracomon is not obtainable in any game except for Digimon World Championships. You have to look around in places where dragons would be in.
i put Romain empire ,France,and Byzantine empires
Some of the world's earliest civilizations developed in the Fertile Crescent in the Middle East. Some of the civilizations are: Sumer, Mesopotamia, and Akkadian.