Merchant of Venice Act 3 what literary device is used in “There is more difference between thy flesh and hers than between jet and ivory”

Okay can someone tell me the answer to this problem bc i have to buy it now and i don’t wanna do that

Abelief that one's culture is superior to another.

Brutus: but as he was ambitious, i slew him. . who is here so base that would be a bondman? if any, speak, for him have i offended. who is here so rude that would not be a roman? if any, speak, for him have i offended. who is here so vile that will not love his country? if any, speak, for him have i offended. i pause for a reply. which rhetorical device does brutus use in this excerpt?