Explain the basic characteristics of the provider-insurer pact in the US health care system (1940s- 1970s) in terms of financing (e.g., purchasers’ payments & reimbursement), relative powers of parties involved (such as purchasers, insurers, providers, suppliers), and overall health care expenditures. (Do not forget to explain what insurer-provider pact was, how it worked, and why it did last so long). Based on Bodenheimer and Grumbach (2009) and your related readings (especially Santerre & Neun-chapter 4 & 6), answer the following questions.