The Preamble states that the League will exist to promote international cooperation and to achieve international peace and security through specific rules of conduct among the world’s governments.

German invasion of France is stopped in the First Battle of the Marne as German troops are forced to the north side of the Marne River, causing the the Schlieffen Plan to fail.

On the eastern front, Germans shatter the Russian Second Army and take over 92,000 prisoners at the Battle of Tannenberg.  ...

He knows that the treaty has flaws but believes the League of Nations can address unresolved issues and help avoid the horrors of another world war.

Representatives of Germany and the Allied and Associated Powers sign the Treaty of Versailles. The Chinese delegates refuse to sign in protest against the Shantung settlement that turns over German...

The attack has little military value, but is intended to terrorize civilians.

Among many of the treaty measures, Germany cedes Alsace-Lorraine to France, recognizes Belgian sovereignty, disarms the military, and agrees to pay war reparations.

President Wilson submits the Versailles Treaty to the Senate and the great debate ensues.

Women’s suffrage amendment passes U.S. Congress in June 1919 and is ratified in August, 1920, giving American women the right to vote.