The Treaty of Versailles was a peace agreement signed on June 28, 1919, that officially ended World War I. It was negotiated among the Allied Powers, primarily the United States, United Kingdom, France, and Italy, and imposed heavy reparations and territorial losses on Germany. The treaty aimed to prevent future conflicts by establishing new national boundaries and creating the League of Nations. The treaty included several key provisions, such as disarmament for Germany and the acceptance of guilt for the war. However, many historians argue that its harsh terms contributed to economic hardship and political instability in Germany, ultimately leading to World War II.