In Dr. Martin Luther King, Jr's I Have a Dream speech, he refers to Abraham Lincoln, stating, “Five score years ago, a great Amerdican, in whose symbolic shadow we stand today, signed the emancipati

In Dr. Martin Luther King, Jr's I Have a Dream speech, he refers to Abraham Lincoln, stating, “Five score years ago, a great Amerdican, in whose symbolic shadow we stand today, signed the emancipation proclamation.” Identify the persuasive/rhetorical technique illustrated in his statement and explain it's purpose.