
A wide variety of systems of interconnected components are called networks. Specific examples include:
transport networks,
roads,
railroads,
shipping routes and
airlines,
Copy of Alexander Graham Bell's original telephone, at the Musée des Arts et Métiers in Paris

Health insurance is a type of insurance whereby the insurer pays the medical costs of the insured if the insured becomes sick due to covered causes, or due to accidents. The insurer may be a private organization or a government agency. Market-based health care systems such as that in the United States rely primarily on private health insurance.
