Final answer:
Infinite needs most characterize a market-oriented economic system, where there is continuous encouragement for consumer desire for new and better products. However, actual economic systems are mixed, blending market systems and command systems to various degrees.
Step-by-step explanation:
The concept of infinite needs is most commonly associated with a market-oriented economic system. In a market system, the forces of demand and supply are left to the free market to determine what goods and services are produced, how they are produced, and for whom. Consumers are continuously encouraged to desire new and better products and services, leading to the perception of infinite needs. Conversely, a command economy attempts to control or limit needs by central planning, which often results in limited choices for consumers.
Given that there are approximately 196 countries in the world, the reality is that each country operates a unique blend of both market and command systems, known as a mixed economic system. For instance, the United States leans more towards a market-oriented economy with government regulations to address issues like monopolies and pollution, whereas China, although it has been incorporating market principles, still retains significant elements of a command system.