Artisans of which culture created the great serpent mound?

Visual apperence to something that is unsoiled

Above is a picture of one of the most famous discoveries ever to be found in china. answer the following questions: - what does the picture show? - when and where was it discover? - who discovered it and what was he doing when he/she discovered it?

Sacred music in the middle ages was mostly vocal in nature with little instrumental use, if at all. was this approach also true of secular music? .