What effort was most significant of WW1?

Answer 1

The most significant effort of World War I was the extensive mobilization of national resources and the collaboration of multiple nations, which transformed warfare and society. The introduction of new technologies, such as tanks, airplanes, and chemical weapons, revolutionized combat. Additionally, the war prompted widespread social changes, including the shifting roles of women in the workforce and the eventual push for suffrage. The conflict ultimately reshaped global politics, leading to the Treaty of Versailles and setting the stage for future international relations.