1919 - Treaty of Versailles

http://www.WatchMojo.com looks back at the 20th Century. In 1919, the Treaty of Versailles officially ended World War I. The peace treaty led to the creation of the League of Nations, whose goal was to prevent wars similar to World War I. One of the most important provisions in the treaty was that Germany had to take full responsibility in causing the war and they had to make reparation to certain allied countries.