What were some ways that World War 1 changed the world?

World War I significantly altered the geopolitical landscape, leading to the collapse of empires such as the Austro-Hungarian, Ottoman, German, and Russian empires and paving the way for new nations and borders. The war also catalyzed social changes, including the push for women's suffrage and shifts in class structures due to the mobilization of large numbers of women into the workforce. Additionally, the Treaty of Versailles and the war's aftermath set the stage for economic turmoil and political instability in Europe, contributing to the rise of totalitarian regimes and ultimately World War II.