5. What is personified in "Grass," and how does that affect the meaning of the poem?

Sandburg's "Grass" is known for its personification of the grass as the speaker of the poem.  One of his most somber poems, "Grass" is so meaningful because the voice of the grass, of nature, is heard.  It is this condition that allows for the magnitude and depth of the poem's experience to be heard.  The grass as the speaker of the poem helps to convey the experience of death and the passage of time

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Explanation:

cassius, casca, and their allies plant false documents to manipulate brutus to join their cause to remove caesar. after doing so, they visit brutus at night in his home to persuade him of their views. there they plan caesar's death. brutus is troubled but refuses to confide in his devoted wife, portia. on 15 march, caesar's wife, calpurnia, urges him not to go to the senate. she has had visionary dreams and fears the portents of the overnight storms.

"facing the rising sun of our new day begun

let us march on till victory is won.",

because the rising sun is a symbol of hope.