Final answer:
The use of rhetorical devices in the preamble to the constitution helps achieve its purposes by making the text more persuasive and impactful.
Step-by-step explanation:
Rhetorical devices such as figurative language (similes and metaphors), numerical data, parallel structure, personification, and repetition are used to organize and emphasize the ideas presented in the preamble.
Therefore, the use of rhetorical devices in the preamble to the constitution helps to achieve its purposes by making the text more persuasive and impactful.
For example, the use of parallel structure in the line 'We hold these truths to be self-evident, that all men are created equal, that they are endowed by their Creator with certain unalienable Rights' highlights the importance and equality of these rights.
Similarly, personification in the statement 'We the People of the United States' gives a sense of unity and agency to the citizens.
Overall, the use of these rhetorical devices in the preamble helps to engage the audience, convey the goals of the government, and make a convincing argument for the establishment of the new government.