The free market economy is no doubt the primary stimulus that has led to the United States’ dominance in the world economic community.By naturally rewarding those producers that excel, excellence is actively encouraged and those that inefficiently produce goods or services are eliminated; thus, the economy becomes a self-sustaining and self-maintaining machine, consistently and constantly achieving the best possible result.The free market economy is entirely based on the principle of supply and demanD、Under this concept, consumers decide for themselves which companies will stay in business, voting with their dollars by spending on those businesses they consider most worthy.By doing so, those companies that are best liked, or most in demand, are granted the privilege of supplying the goods and services that consumers pay for. In that sense, efficiency is achieveD、For those companies that best perform to the expectations of consumers are left prosperous in the market, while their less efficient counterparts simply die out of the market, starved of the dollars of consumers who simply prefer not to buy their products.