How was Nelson Mandela a servant leader prior to his imprisonment in $1962($in accordance with Greenleafs definition of servant leadership$)?$Describe Nelson Mandela as a servant leader after he was released from prison in $1990($in accordance with Greenleafs definition of servant leadership$).$What were the characteristics of servant leadership that Nelson Mandela best exemplified?What were the characteristics of servant leadership that Nelson Mandela least exemplified?How can servant leadership be used to manage a human service organization?