What is the treaty of versailles-

This treaty is the most important when it comes to the treaties that ended the First World War. It was signed on June 28th 1919 and became effective on the 10th of January in 1920. The purpose of the treaty was to cease the fighting between Germany and the Allies. It focused on forcing Germany to accept responsibility for the war and punishing them for it. The main terms of the treaty were
1. The surrender of all German colonies as League of Nations Mandates (meaning that Germany would basically give their colonies back their sovereignty)
2. The return of the Alsace-Lorraine to France
3. Giving up the areas of Eupen-Malmedy to Belgium, Memel to Lithuania and the Hultschin district to Czechoslovakia.
Germany was also forced to pay reparations to other countries for damage caused by the war. This actual was the precursor to the Second World War.
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The Treaty of Versailles was the most important of the peace treaties that brought World War I to an end. The Treaty ended the state of war between Germany and the Allied Powers.

The answer is athens and sparta.