What were the major causes of U.S. mortality in the last 100 years

Paragraph 1 (Minimum of 250-300 words)

What were the major causes of U.S. mortality in the last 100 years, and what public health measures most contributed to improvements in the health of the nation? Include at least two source citations from the readings and/or additional sources to support your answer.

Paragraph 2 (Minimum of 250-300 words)

What are the major causes of disease and death in the 21st century (e.g., chronic illnesses, communicable diseases, etc.) that continue to affect U.S. citizens in spite of the achievements in public health in the past century? What have been some of the strategies implemented to combat these illnesses on the local and national levels? Have they been successful? Include reference citations where appropriate