The treaty was extremely harsh on Germany. It forced Germany to "accept the responsibility for causing all the loss and damage" of the war. Germany was forced to disarm, give up land to France, and to pay reparations of 132 billion Marks (around $442 billion in 2014 money).
America helped Russia and Japan in the world war I. Therefore America emerged as the most powerful country in the world. America had power of Foreighn policies and had a much stronger effect after the shock of unexpected world war II.
