After competing this weeks reading answer the followingquestions:a.What was the

After competing this weeks reading answer the followingquestions:a.What was the most important achievementof public health in thetwentieth century? Why?b.What will be the most important achievement ofpublic health in thetwenty-first century? Why?c.Which of the following barriers will have thegreatest negative impact on the effectiveness of publichealth? i.External: publicvalues economic and resource availabilityii.Internal: fragmented programs inability toprioritize and focus public health efforts Your initial post should be a minimum of 250-300 words and utilizeat least two scholarly sources cited in APA format.