The events preceding World War II in Europe are closely tied to the rise of fascism, especially in Nazi Germany.
World War II is generally viewed as having its roots in the aftermath of World War I. In that war, the German Empire under Kaiser Wilhelm II, with its allies, was defeated, chiefly by the United Kingdom, France, and the United States.
The victors blamed Germany entirely for the war and all resulting damages; it was Germany that effectively started the war with an attack on France through Belgium. France had, in 1871, suffered a defeat in the Franco-Prussian War, and demanded compensation for financial devastation during the First World War, which ensured that the various peace treaties, specifically the Treaty of Versailles would impose tough financial war reparations and restrictions on Germany in the aftermath of World War I. The British naval blockade of Germany was not lifted until the treaty was signed at the end of June 1919.
After several liberal governments failed to rein in these threats, and the fascists had increased their public profile by highly visible punishment expeditions to supposedly crush the socialist "threat", King Victor Emmanuel III of Italy invited Benito Mussolini to form a government on October 29, 1922. The fascists maintained an armed paramilitary wing, which they employed to fight anarchists, communists, and socialists.