Final answer:
Between 1965 and 1983, the United States implemented reimbursement mechanisms such as Medicare, Medicaid, and block grants. These mechanisms aimed to provide health insurance and allocate federal funds in a more efficient manner.
Step-by-step explanation:
Between 1965 and 1983, there were several reimbursement mechanisms implemented in the United States. One significant mechanism was the establishment of Medicare and Medicaid in 1965 as part of the Social Security Amendments.
Medicare provides health insurance for individuals aged 65 and older, while Medicaid offers insurance for low-income individuals. Another important reimbursement mechanism was the implementation of block grants in the 1980s, which allowed the states to determine and manage the allocation of federal funds.