What do points 6–13 suggest Wilson believed about achieving lasting peace? He believed that the victorious nations of World War I should help rebuild the economies of the losing nations. He believed that world peace could only occur if individual nations felt secure within their borders. He believed that a powerful nation should lead the way in teaching peace to other nations. He believed that although true world peace would not come soon, several European nations were ready for peace.

He believed that world peace could only occur if individual nations felt secure within their borders.

Explanation:

In his speech to Congress on January 1918, President Woodrow Wilson outlined his ideals for the post-war world. He made a Fourteen Point agenda where he campaigned for self determination of the different ethnicity in Europe.

His Fourteen Points are summarized below:

1. There should be open diplomacy and no secret treaties.

2. There should be freedom to navigate the seas for all countries

3. There should exist free trade which would end economic dependency.

4. There should be an arms reductions for all nations.

5. Fair, accurate and non-prejudiced rulings in colonial claims.

6. Restoration of territories that belong to Russia

7. Independence of Belgium

8. The return of the territories that belong to France and for their full liberation.

9. There should be clear delineation of Italy's frontiers along national lines.

10.  Residents of Austria-Hungary  should have self-determination

11. There should be independence for the Balkan states

12. Self determination of Turkey  

13. Poland should have their independence.

14. A general body or association among nations should be formed to deliberate and mediate on international matters.

Based on the points 6-13, President Wilson believed that to achieve lasting peace, individual nations should feel secure within their borders.