From the author of the long-running #1 bestseller StrengthsFinder 2.0 comes a landmark study of great leaders, teams and the reasons why people follow. Nearly a decade ago, Gallup unveiled the results of a landmark 30-year research project that ignited a global conversation on the topic of strengths. More than 19 million people have since taken Gallup’s StrengthsFinder assessment, which forms the core of several books on this topic, including the #1 international bestseller StrengthsFinder 2.0. In recent years, while continuing to learn more about strengths, Gallup scientists have also been examining decades of data on the topic of leadership. They studied more than 1 million work teams, conducted more than 20,000 in-depth interviews with leaders and even interviewed more than 10,000 followers around the world to ask exactly why they followed the most important leader in their life.