The document summarizes some of the major social, economic, and political effects of World War I. Socially, the war shattered optimism and women gained greater independence and rights. Industry became more mass-produced and cities grew enormously. Attitudes shifted from pre-war optimism to post-war negativism. Economically, the war was hugely expensive and shifted financial power from London to New York. Politically, the international system was devastated and countries rethought how to interact to maintain security.