What was the treaty that ended World War 1 that laid some of the unrest that would later explode into World War 2?

The treaty that ended World War I was the Treaty of Versailles, signed on June 28, 1919. It imposed heavy reparations and territorial losses on Germany, which fostered economic hardship and national resentment. The treaty's harsh terms and perceived injustices contributed to political instability in Germany, setting the stage for the rise of Adolf Hitler and the outbreak of World War II.