What do you think make Tennyson personify the brook?

Tennyson personifies the brook in his poem to give it a sense of life and movement. By portraying the brook as a living entity with its own thoughts and feelings, Tennyson creates a more vivid and dynamic image for his readers, making the brook a central character in the poem. This personification also allows Tennyson to explore themes related to the passage of time and the flow of nature.