Need the below discussion question answered, 250-300 words, 3 scholarly sources , APA format

This is the book the case study is in:Nickitas, D., Middaugh, D., & Aries, N. (2016). Policy and politics for nurses and other healthcare professionals. Burlington, MA: Jones & Bartlett Learning.

Read the case studies in Chapter 3 of Policy and Politics for Nurses and Other Health Professionals. Examine what Margaret Sanger, The Arkansas State Legislature, and others have done to make changes to health care policy. Outline the process that these pioneers took to effect change. Describe how policy change moves from internal adoption to legislation. Discuss expertise and internal and external advocacy. Give an example of a policy change you would advocate for.