In 1914, the assassination of Austro-Hungarian Archduke Franz Ferdinand became the catalyst for a great war that swept over the world. Anxious Americans watched as the conflict widened and eventually engulfed their nation. President Woodrow Wilson believed a war would "make the world safe for democracy." When World War I ended, Wilson struggled to establish the League of Nations, the blueprint for the future United Nations, but the American public was more interested in technological advances like the automobile, radio, camera, refrigerator, and commercial aviation that changed the way they lived. In this new volume, learn how the United States experienced exciting and swift economic, technological, and social changes during World War I and the subsequent "Roaring Twenties."