Final answer:
Medicaid is a federal-state joint program that provides medical insurance for certain low-income people, focusing on families with children, the elderly, and the disabled.
Step-by-step explanation:
Medicaid is a federal-state joint program that provides medical insurance for certain low-income people. It focuses on low-income families with children, the low-income elderly, and the disabled. Medicaid was created in 1965 as part of Lyndon Johnson's Great Society and is administered by states. The federal government helps fund Medicaid, but each state is responsible for administering the program and determining eligibility.