1) Public health practice was initially concerned with infectious and environmentally related diseases, but in recent years has evolved to focus more on injury prevention, substance abuse, violence, tobacco-related, and other chronic diseases. Present at least one pivotal legal and historical occurrence that resulted in this shift of public health effort. Justify your rationale with supportive evidence. Please use a scholarly source and APA formatting

2) Review the Ten Great Public Health Achievements (Exhibit 2.3) of your textbook. Select one of the 10 achievements. What is the importance of your chosen achievement to society? In your own words, defend its right to be considered a "Great Public Health Achievement." (See attachment for the 10 achievements)

Please use a scholarly source and APA formatting