Answer
The focus of Sharp's book "The Politics of Nonviolent Action" was understanding political power and nonviolent action. He argued that nonviolent action could be used to challenge unjust regimes and promote social change. He also developed a typology of nonviolent action, which included methods such as protest, boycotts, strikes, and civil disobedience. Sharp's work has been influential in the development of nonviolent movements around the world.