给定一个英文文本，将其中的所有名词提取出来。

In the United States, the great majority of people pursue their own individual self-interest, but they are content to rely upon what Adam Smith called the “invisible hand”—the tendency of free markets to regulate themselves through the collective actions of self-interested individuals—for the betterment of society as a whole.

United States, majority, people, individual, self-interest, Adam Smith, hand, tendency, free markets, regulation, collective actions, self-interested individuals, betterment, society