All of the mentioned
Explanation:
-After WW1 and peace treaty of Versailles many countries were unsatisfied, especially  Germany and Italy.  Ultimately, the Treaty of Versailles (1919) required Germany to accept responsibility for World War I and imposed reparations. It also called for the establishment of the League of Nations, as Wilson had envisioned. The treaty failed to create a long-term environment favorable to peace.
-Because of that rise of Nationalism in those countries was pretty obvious, especially after the economical crisis. Â The rise of fascism in Italy began during World War I, when Benito Mussolini and other radicals formed a political group (called a fasci) supporting the war against Germany and Austria-Hungary.
-Idea of creation League of Nation was not sufficient as many countries didn't wanted to be involve it.  Therefore, the failure of the League of Nations was the primary cause of World War II because it led to a series of events that triggered German aggression, ultimately causing World War II. In 1919, the victors of World War I came together to form the Treaty of Versailles, a precursor to the League of Nations. Finally, the League's greatest weakness came from the fact that it was set up by the Treaty of Versailles. The Treaty had many flaws (for example, reparations) – but the League was supposed to enforce it. Also, the Treaty was hated, especially by the Germans and the Americans, so the League was hated too.
Similar to European nations like Italy and Germany, nationalism and aggressive expansionism began to rise to prominence in Japan after World War I.
The 1919 Treaty of Versailles that ended World War I did not recognize the Empire of Japan’s territorial claims, which angered the Japanese and led to a surge in nationalism.
Throughout the 1920s, various nationalistic and xenophobic ideologies emerged among right-wing Japanese intellectuals, but it was not until the early 1930s that these ideas gained full traction in the ruling regime.
During the Manchurian Incident of 1931, radical army officers bombed a small portion of the South Manchuria Railroad and, falsely attributing the attack to the Chinese, invaded Manchuria.
International criticism of Japan following the invasion led to Japan withdrawing from the League of Nations, which led to political isolation and a redoubling of ultranationalist and expansionist tendencies.
In 1932, a group of right-wing Army and Navy officers succeeded in assassinating the Prime Minister Inukai Tsuyoshi.
The plot fell short of staging a complete coup d’état, but it effectively ended rule by political parties in Japan and consolidated the power of the military elite under the dictatorship of Emperor Hirohito.
-Additionally, Great forces practically allowed Germany and Italy to gain control over some territories, without practically any opposition.
