High Quality Content by WIKIPEDIA articles! American modernism like modernism in general is a trend of thought that affirms the power of human beings to create, improve, and reshape their environment, with the aid of scientific knowledge, technology and practical experimentation, and is thus in its essence both progressive and optimistic. The idea that individual human beings can define themselves through their own inner resources and create their own vision of existence without help from family, fellow citizens, or tradition is a large trend. The general term covers many political, cultural and artistic movements rooted in the changes in Western society at the end of the 19th and beginning of the 20th century. American modernism is an artistic and cultural movement in the United States starting at the turn of the 20th century with its core period between World War I and World War II and continuing into the 21st century.