Which country was not part of the "Big Four" at the Paris Peace Conference?

Name: Which country was not part of the "Big Four" at the Paris Peace Conference?
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Russia was not included in the "Big Four" because it withdrew from World War I in 1917 and underwent political and social upheavals that prevented its full participation in the peace negotiations. The "Big Four" consisted of the United States, Great Britain, France, and Italy.

Which Country Was Not Part of the "Big Four" at the Paris