Maybe someone picked up a piece of "magnesian" rock on an Aegean coast and noticed the piece of lodestone was peculiar. It attracted a piece of iron, and could change the properties of the iron when the iron was rubbed with the rock.
Magnesia
china
magnet where not made they were discovered,900 years ago lodstone was discovered it contain special properties to attract other material such as magnetic material
Micheal Faraday
by using their on identifyng magnet GLASSes of thermodaynamics
Unknown, it has been known since before recorded history.
Michael Faraday
Magnesia
Artificial magnets were first discovered in ancient Greece in the city of Magnesia, leading to the term "magnet" to describe them. Magnetite, a natural magnetic material, was found in the region and is believed to be the source of the first artificial magnets.
I believe it was in Europe, during the 14-16 century,in a small market town.
Faraday, proposed lines of flux and lines of force.
J J Thomson