The author explores ideological demarcation in the USA during the bourgeois revolution of the 18th century. The first part of the book analyzes the process of formation of moderate, radical and revolutionary directions of social thought. In the second, the views of representatives of the democratic ideology of Franklin, Jefferson, Payne and others are compared. In the third part, the ideological positions of the bourgeois-planter bloc are considered. In conclusion, the author sums up the impact of the bourgeois revolution of the XVIII century. on the formation of ideological traditions in the United States.