The Treaty of Versailles was enacted in 1919 as the paece agreeement that ended WWI and it signed between the Allied victorious powers and Germany. Its two major outcomes were the following:
Germany, together with its allies, was forced to assume the whole responsibility for all the losses and all the damage caused.
Germany had to disarm and renounce to some of its territories. Moreover, war reparations were imposed on Germany, in the form of very large money sums, that had to be paid to the victorious contries.
This treaty was not very sucessful in relieving the tensions that had characterized WWI, and its provisions would be connected to the causes of the subsequent WWII.
