Here's why:
* Focus on Personal Emotion: The poem expresses the speaker's feelings and thoughts about the world, their isolation, and their yearning for connection.
* Musicality and Figurative Language: Dickinson uses vivid imagery, metaphors ("the unopened bud"), and a flowing rhythm to create a sense of emotional resonance.
* Concise and Direct: The poem is relatively short and focused, with a clear emotional message.
* Lack of Narrative: There's no clear plot or story being told. It's more about the speaker's internal world.
While lyric poems can be categorized further, the core elements of "This is my letter to the World" fit within the broader definition of lyric poetry.