what about the spirit from "the land of mist and snow"

The "land of mist and snow," was the place that the sailors were hampered by ice and mist; this was the place that the albatross guided them away from before being shot by the mariner with his crossbow.

who was the angelic spirits which move the bodies of the dead men

The angelic spirits come to resurrect (kind of) the Mariner's crew. The spirits want the Mariner to complete his penance for killing the albatross. They also want the Mariner to transfix others and tell his story. That too is part of his penance that will never end.

“The spirit who bideth by himself / In the land of mist and snow, / He loved the bird that loved the man / Who shot him with his bow.” Write an essay analyzing the role that these lines play in “The Rime of the Ancient Mariner.” Why are these lines important to the plot of the poem? What poetic effects does Coleridge use in these lines? What tone is created by the poetic effects in these lines

someone please help.. it wont let me make my own question