The Treaty of Versailles contributed to the conditions that led to World War II in several significant ways:

1. **Harsh Reparations**: Germany was forced to pay massive reparations, crippling its economy and causing widespread poverty and resentment.

2. **Territorial Losses**: Germany lost significant territory and all its overseas colonies, which fueled nationalist anger and a desire for revenge.

3. **Military Restrictions**: The treaty severely limited the size and capability of the German military, creating a sense of vulnerability and humiliation.

4. **War Guilt Clause**: Article 231 blamed Germany for starting World War I, fostering deep resentment and a sense of injustice among Germans.

5. **Political Instability**: The economic and social strain caused by the treaty contributed to political instability in Germany, making it easier for extremist parties, like the Nazis, to gain support.

6. **Rise of Nationalism**: The treaty’s harsh terms fostered extreme nationalism and the desire to overturn the imposed conditions, leading to aggressive policies and expansionism.

7. **Weak League of Nations**: The treaty established the League of Nations, but without the participation of key powers like the U.S., it was ineffective in maintaining peace and addressing grievances.

8. **Economic Impact**: The global economic instability, exacerbated by the Great Depression, worsened the economic impact of the treaty on Germany, contributing to social unrest and radical political movements.

Overall, the Treaty of Versailles created a climate of economic hardship, national humiliation, and political instability in Germany, which paved the way for the rise of Adolf Hitler and the outbreak of World War II.