What is a rhetorical strategy and a detailed example of one?

Answer: The use of ethos, pathos, and logos are all rhetorical strategies.

Example - The "I Have a Dream" speech by Martin Luther King Jr.

Explanation:

The "I Have a Dream" speech by Martin Luther King Jr. relies on mainly pathos when King describes all of the pain in African Americans when they were being segregated. This relates to the African Americans listening and strikes their hearts with passion. By using pathos, King has gained even more African American followers, and more Caucasian ones too.