solved I’m working on a health & medical question and need

I’m working on a health & medical question and need an explanation to help me learn.

Question #1
Research the history of public health nursing. What role does the government play in the health of its citizens? How involved should the government be in our health?
Question #2
Compare and contrast health care systems in the United States to other major post industrialized countries. What are the advantages/disadvantages to these systems?
Question #3: 
Identify one pivotal person who impacted the history of public health nursing. Make sure to include information about this person and explain ways they impacted public health nursing and how this was important to the development of public health nursing as it is understood today.