Just by seeing an art work, can we tell about the origin of the art work? Sometimes we can, sometimes, we can't.
If you take abstract art - you cannot say where it originated from. However, if an art work depicts the culture of a region & if you are familiar with the culture painted, you can. If you take landscapes, the colours and contours can sometimes differ from place to place. Here in our country, we have light orange/ pink sunsets & sunrises. However, in some parts of the world, they will be deep red. Landscapes in Europe will usually be dark & lush green, whereas here in the equatorial region, they will usually be in rustic browns - especially in summer & winter seasons. An artist tries to paint the colour he sees in his surroundings. So sometimes we can see marks of origin in an art work. An expert can tell where the art work originated by seeing it.
They say art is universal. Human emotions too are universal. However, an artist painting an art work takes the surroundings into account too. In such cases even if a painter paints the smile of a person - which is universal, the clothes the person in the picture wears, the hair style, facial contours, surrounding things in the room (background) or buildings or landscapes say where the art work originated. Yes, Mona Lisa's smile is Universal. But the clothes she wears are not! They belong to centuries ago European Culture. So we can guess where it originated. If you see Raja Ravi Verma's (Indian painter) works, you can tell they originated in India & belonged to last century - the way his women draped in sarees - the style belonged to last century not to this century.
So friends, let your brains work. Next time if you see an art work of an unknown artist, try to guess where the art work originated & which period it belonged to. And soon you too will become an expert in art!