An advocate of the U.S. immigration laws that favored Northern Europeans, the Klansman Lothrop Stoddard primarily wrote about the alleged dangers which "colored" peoples posed to white civilization, with his most famous book "The Rising Tide of Color Against White World-Supremacy" in 1920. Nordicism led to the reduction in Southern European, along with Slavic Eastern European and Russian immigrants in the National Origins Formula of the Emergency Quota Act of 1921 and the Immigration Act of 1924, whose goal was to maintain the status quo distribution of ethnicity by limiting immigration of non-Northern Europeans. According to the U.S. Department of State the purpose of the act was "to preserve the ideal of American homogeneity". The racial term "Untermensch" originates from the title of Stoddard's 1922 book "The Revolt Against Civilization: The Menace of the Under-man". It was later adopted by the Nazis (and its chief racial theorist Alfred Rosenberg) from that book's German version "Der Kulturumsturz: Die Drohung des Untermenschen" (1925).