Answer:
A standing army.
Explanation:
The Treaty of Versailles was very important and was the official end of World War I. This treaty was signed by Germany and the Allied Powers, but is known for being very harsh on Germany.
The Treaty of Versailles extremely angered the Germans, who believed they had just as much to do with World War I as everyone else did. The treaty however, made Germany take full responsibility for the war and gave them harsh guidelines to follow.
Germany had to pay billions of dollars, give up the land they got during World War I to France and the League of Nations, placed heavy restrictions on their military, and other important things. Germany could keep a standing army under the Treaty of Versailles, without breaking the terms.
