Final answer:
The poem "The Second Coming" was written by the Irish poet W.B. Yeats in 1919. It is distinct from historical religious predictions and focuses on the turmoil and disorder post-World War I.
Step-by-step explanation:
The poem "The Second Coming" was written by W.B. Yeats, an Irish poet who produced it in 1919 and had it published in 1920. This question does not specifically relate to the historical accounts of millennial sects or religious beliefs about the actual Second Coming of Jesus. Instead, it refers to the literary piece by Yeats which uses Christian imagery and prophetic language to explore themes of chaos, social upheaval, and the breakdown of traditional order following the First World War.
The poem is known for its powerful use of symbolic imagery and for the line 'Things fall apart; the centre cannot hold,' which has been widely referenced in popular culture and literature. Despite similar thematic references to eschatological events, the content provided in the reference does not accurately answer the student's question about the authorship of the poem "The Second Coming."