Answer:
Rhetorical device: Allusion.
Persuasive device: Pathos, Ethos.
Explanation:
As per the question, 'allusion' is the rhetorical device that has been employed in this passage while 'pathos and ethos' are the persuasive devices used by the author in the given passage.
The author employs 'allusion' as the rhetorical device to enhance the contextual depth of the passage when the king in the passage indirectly refers to Moses and alludes a historical significance by describing the fact that 'however, the time has been passed but Moses was unable to set in the 'promised land' but rather looking from the mountaintop only.
The persuasive device 'pathos'(appeal) to emotion is reflected through the mixed imagery of joy and solicitude presented by the author to convince the audience emotionally while 'ethos'(appeal to ethics) is displayed through the author's comparison which implies that 'with the king or without him, the African Americans would ultimately attain their goal of gaining legal equality' fro themselves. This comparison establishes the author's character and persuades the audience ethically.
