Leadership can be defined and developed in many ways. Effective leadership requires influence over others through non-coercive means, the ability to capture attention and gather followers, and social influence through ideas and actions. While leadership qualities can be learned, leadership also emerges in response to environmental factors and crises. Developing skills in areas like communication, teamwork, problem-solving and social/emotional intelligence can help strengthen leadership abilities. Maintaining characteristics like integrity, vision, empowerment of followers and hope are also important for leaders.