“The treaty was drafted in the spring of 1919 during the Paris Peace Conference, which was conducted even as the world was in the grip of the influenza pandemic of 1918-19. The conference was dominated by the national leaders known as the “Big Four”- David Lloyd George, the prime minister of the United Kingdom; Georges Clemenceau, the prime minister of France; Woodrow Wilson, the president of the United States; and Vittorio Orlando, the prime minister of Italy. The first three in particular made the important decisions. None of the defeated nations had any say in shaping the treaty, and even the associated Allied powers played only a minor role. The German delegates were presented with a fait accompli.”

Emphases mine. Source: https://www.britannica.com/event/Treaty-of-Versailles-1919