Why do speakers often refer to their personal lives in a speech?

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?

Describe how the story of uncle pyotr in “a fateful journey” differs from the historical account of immigrants in “moving to america”

  which statement describes the main argument of truth’s speech