Elizabeth Marshall Thomas References Elizabeth Marshall Thomas American author Ask Anything Homework Help Written by The Information Architects of Encyclopaedia Britannica The Information Architects maintain a master list of the topics included in the corpus of Encyclopædia Britannica, and create and manage the relationships between them. The Information Architects of Encyclopaedia Britannica Britannica AI Ask Anything Learn about this topic in these articles: economic system/ Prehistoric and preliterate economic systemsThe American writer Elizabeth Marshall Thomas described this distributive system in The Harmless People (rev. ed. 1989): Read MoreThe American writer Elizabeth Marshall Thomas described this distributive system in The Harmless People (rev. ed. 1989): Read More