The music of the Classical period is described as being more "simple than the music of the Baroque period. How is this BESTdemons Oa
It is less complex and easier to perform
Oь
It is not as technically precise
Ос
It sounds simpler to the listener.
It doesn't involve as many forms.

the longest time is 123 years

relief sculpture - images are set against a flat background.

a coin is a good example: the inscription, the date, and the figure are slightly raised above a flat surface. the ancient egyptians sometimes carved figures into a flat surface.  

pro: they take significantly less time to make and do not require as much tools or skills as free-standing

cons: not nearly as realistic, as it is not fully 3-d, and does not have the details that a free-standing one does.

freestanding sculptures (also called  carved in the round) are not attached to any  background.   they are 3-dimensional  and fully rendered.