Answer:
Look below
Step-by-step explanation:
An acronym for the causes of WWII is (VAIN):
Versailles (Referring to the Treaty of Versailles)
Appeasement
Imperialism
Nationalism
Let's go through each one:
Versailles --> The Treaty of Versailles blamed Germany for WWI (war guilt clause), and made them pay billions worth of reparations. Germany could not pay all the reparations (immediately), leading to hyperinflation. The citizens started questioning the Weimar Republic (democratic government system of Germany at that time). They started rebelling, and later Adolf Hitler took over, establishing a totalitarian rule over Germany.
Appeasement --> Appeasement is essentially giving someone something to make them happy. Britain and France did not do anything while Germany violated the Treaty multiple times. Examples of this include: Anschluss (union of Germany and Austria), Germany taking over Czechoslovakia, and Germany annexing Sudetenland. Note that these all helped Germany become stronger.
Imperialism --> Some of the strongest powers in WWII gained this power through imperialism. Examples include: Japan taking colonies in China and the Pacific because they needed more resources and "living room", Italy taking colonies in Africa to promote nationalist feelings among Italians, and Germany trying to regain the territory they lost due to the Treaty of Versailles.
Nationalism --> Nationalism is essentially people thinking that their country (to which they share culture/history with) is the best, and they should be loyal to that country. Causes leading up to WWII displayed nationalism. For example, Adolf Hitler used Social Darwinism to say that the Aryan Race was the "supreme race" and that everyone else was a "lower race". In Japan, it was "Asia for Asians" to get rid of Western rule. Japan, Germany, and Italy also called for the return of the old empires.