What is the effect of the words "the living joy that sang one spring morning, sending its glad voice across an hundred years"?

The personification suggests that the happiness of the past is eternal.

Explanation:

personification is the attribution or the giving of a human quality to a non living thing. happiness of the past is eternal suggest that the happiness one feels, that deep emotion of joy and excitement is still there and it will never change

both the address and the poster use diction to convey their message. diction is defined as a style of writing or speaking based on the types of words chosen in order to send a message. parallelism is when a similar sentence structure is used for several sentences on a text; roosevelt's address doesn't follow that. repetition has to do with repeating a word or sentence in order to emphasize and idea, however neither the poster nor the address use repetion. finally, the address doesn't use images to convey a message.

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