Answer:
Germany and the other defeated powers, Austria-Hungary, Bulgaria, and Turkey, were not represented at the conference; nor was Russia, which had fought as one of the Allied powers until 1917, when the country's new Bolshevik government concluded a separate peace with Germany and withdrew from the conflict.
Step-by-step explanation:
This should help you answer the question, and if not I suggest looking at the actual treaty as a primary source.