What is the main idea of the poem, the raven? "

The eternal power of grief.

Explanation:

In the poem "The Raven," we see a man tortured by grief. He has lost the woman he loves, Lenore. While he is in the midst of his pain, he receives a mysterious visitor: a raven that comes from the world of the afterlife. The man asks questions to the raven, who only replies with "nevermore." The phrase describes how the man will never get relief from his pain. He will never know anything about her again, he will never be at peace, he will never stop suffering. The poem's main idea is the eternal power of grief.

eli whitney was an american inventor best known for inventing the cotton gin. this was one of the key inventions of the industrial revolution and shaped the economy of the antebellum south.