Thread 1:Explain the historical context of the film. What decades of American history does the film

Thread 1:Explain the historical context of the film. What decades of American history does the film focus on and what else is occurring at the time? What was the historical context in which Charles Norris established the medical examiners office? How was science and, especially chemistry, changing the world of modern Americans?Thread 2:In what ways did Charles Norris and Alexander Gettler use science to fight science, especially in the case of Prohibition, leaded gasoline, and radium?Thread 3:What is the “profound” shift that the producers of the film see in American culture in this period? (From the point at which Norris establishes the medical examiner’s office to when Gettler retires in 1958).You have to watch the video to answer to those threads this is the link:https://mtsu.kanopy.com/video/american-experience-poisonors-handbook