Highlight the main periods in the history of Western countries in 1919-1939.

After the First World War, relative peace was established in the world. At the Paris Conference, the Entente countries refused to support the new government in Russia. Until 1923, new relationships were formed in the world. In the second period (1923-1929), the first conflicts between the winners began to form. The USSR was admitted to the League of Nations. In the third period, which lasted until 1939, new relations developed. The USSR was kicked out of the League of Nations for invading neighboring territories. Fascism was formed in Germany, led by Hitler.