The document discusses the major philosophical schools and tendencies that emerged in Europe between the 19th and 20th centuries. It outlines how the tumultuous period from 1789-1815 transformed European culture and set the stage for dramatic changes. Philosophers reflected on and helped drive these changes. Some of the key philosophies discussed include German idealism, utilitarianism, Marxism, existentialism, positivism, pragmatism, and transcendentalism. Marxism in particular had a profound influence on the history of the 20th century.