As time passed, the list of American businessmen cooperating with the Soviets grew to include the heads of some of the largest corporations in the United States. For a more detailed study on this subject we recommend Antony C. Sutton's book The Best Enemy Money Can Buy, published by Liberty House Press, Billings, Montana. To understand why wealthy businessmen in the United States have helped to establish and sustain what is commonly known as Communism, it is helpful to define some terms relative to the various economic systems of the 20 th century. Communism is defined by The American Heritage Dictionary as, "A social system characterized by the absence of classes and by common ownership of the means of production and subsistence." No nation existing during the 20th century fits this definition of Communism. There have been many communistic experiments (several in the U. S.) in which a community of people has voluntarily attempted to live together under such a system; however, none of these have ever been successful in improving the quality of life or remaining in existence for a long period. Communism, as laid down by Karl Marx in The Communist Manifesto, was a call to establish Socialism. His ten point plan for the takeover of industrialized nations included. Abolition of private property, a graduated income tax, abolition of right of inheritance, government confiscation of property, a national banking 94 The Secret Side of History Communism.