"Intensive research in recent years into the sources of economic growth among both developing and developed nations generally point to a number of important factors: the state of knowledge and skill of a population; the degree of control over indigenous natural resources; the quality of a country's legal system, particularly a strong commitment to a rule of law and protection of property rights; and yes, the extent of a country's openness to trade with the rest of the world. For the United States, arguably the most important factor is the type of rule of law under which economic activity takes place. When asked abroad why the United States has become the most prosperous large economy in the world, I respond, with only mild exaggeration, that our forefathers wrote a constitution and set in motion a system of laws that protects individual rights, especially the right to own property. Nonetheless, the degree of state protection is sometimes in dispute. But by and large, secure property rights are almost universally accepted by Americans as a critical pillar of our economy. While the right of property in the abstract is generally uncontested in all societies embracing democratic market capitalism, different degrees of property protection do apparently foster different economic incentives and outcomes."