Martin luther king jr. uses several rhetorical devices in his speech “i have a dream.” identify two of the rhetorical devices from his speech and analyze how he uses them. asap

his speech is one of the best speeches ever .. he had used many  rhetorical devices but we discuss two here :
metaphor :generally the metaphors are the comparison of the things but the metaphors used in the speech are called hard-hitting because these are the metaphors to excite the crowd listening ..like : he rung the bell in great joy to convey the message of freedom ..
Allusions : in the speech he used allusions to make crowd understand clearly..it is the reference to any event ,or a person ..like: i guess my mother thinks me superman that is why she asked me to do so much work ..