How did the FBI become so powerful?

The FBI became powerful due to a combination of strategic leadership, especially under J. Edgar Hoover, who emphasized intelligence gathering and national security. The agency expanded its scope and resources, particularly during times of crisis, such as the Great Depression and World War II. Legislative support and evolving legal frameworks allowed the FBI to enhance its investigative capabilities, including the use of advanced technology. Additionally, public trust and fear of crime bolstered the agency's authority and influence in American society.