Great leaders shape history. Through their vision and integrity, passion and perseverance, as well as their willingness to take risks, they challenge beliefs and change the course of people's lives. Some are born into positions of power, others have leadership thrust upon them, but they all possess the ability to seize opportunities when they arise and the charisma to persuade others to follow where they lead. "100 Great leaders" looks at some of the most renowned, the most notorious and the most unlikely leaders. It examines each indidvidual's skills and aptitude for leadership, and analyzes the effects their lives had on history.