What thing changed after World War 1?

Three major events dominate changed after WW 1. One was the end of a strong German nation. The terms of the Treaty of Versailles totally altered the military, political and economical scene in that nation. The end of WW 1 also saw the birth of fascism in Italy. This would many years later change the role of Germany in the early 1930's. The third change is the success of the Bolshevik Revolution in Russia. To clarify this statement, what is meant by this is that perhaps against all odds the Soviets were able to retain their grip on Russia after WW 1 and retain it over a long period of time. The military power of the USSR resulted in world wide changes throughout the history of the USSR.Also, either s a fourth change was the creation of the League of Nations and its ending.