What international organization was the purpose as part of the treaty of versailles was designed to solve international disputes peacefully

The answer of the question is League of Nations.

Explanation: The Treaty of Versailles is known for ending the world war I.

The treaty was signed in the Versailles of France signed between allied powers and Germany. On the allied power side there were America, Britain and France.  On the treaty Germany was agreed to pay the concession for the damage made their soldier during war. France wanted a frontier on Rhine to prevent attack from Germany and wanted to make Germany weak economically. However Britain and USA only agreed to make Germany to pay for the damage.

On the other hand US president Wilson presented his famous fourteen points which included free trade, self determination of Europe,but the most important proposal was to make League of Nations which would be a place for countries for talk without war to solve a problem.

Later the League of Nation was existed until second world war.