4. Explain the connection among the following four facts.

• Fact 1: In the United States, health insurance and health benefits typically are provided through an individual's employer.
• Fact 2: Employers began the practice of providing health insurance and health benefits to their employees during World War II.
• Fact 3: During World War II the government set a maximum wage that employers could pay
• Fact 4: During World War II the demand for labor was very high (to produce war-related goods and services) and the supply of labor was reduced (most healthy young males and many young women were serving in the military).