How does an author use artifacts in literature?

To develop the plot and characters

Explanation:

An artifact is an object created or made by people, for example : a gadget, a historical or cultural objects. A literary artifact is used by the writer as a symbol that represents another idea and  provides the reader with a context. When using artifacts the writer develops the plot and the characters. Historical records, newspaper accounts, or published works are examples literary artifacts that can be used to support a plot or argument.

where is the poem at?