Hi can anyone help me with this research please!!! 1-Identify three major milestones of the US Health Care System.Why are these important?Are they

Hi can anyone help me with this research please!!!

1-Identify three major milestones of the US Health Care System. Why are these important? Are they different from other countries?

2-Define primary, secondary and tertiary prevention. 

3-i need to Define Heath in my own words, Identify two Healthy People 2020 topics and objectives and Discuss why these topics are important issues in the US Health Care System?

4-Describe the Health Care Iron Triangle. Why is each component important to the delivery of healthcare?

i will appreciate any help thank you