The answer is World War I.
World War I started in 1914. This war caused citizens to revolt and overthrow corrupt governments in areas like Russia, where the Bolshevik Revolution took place during 1917.
World War I ended with the Treaty of Versailles in 1919. This punished Germany for the beginning of World War I. Along with Germany, several other countries were destroyed. Not only was their infrastructure destroyed, their economy was suffering as well. This all helps lead to the rise of fascism.
When a diffusion comes along it usually causes diversity between the people who diffused it.
example:
john : i hate this culture!
jane : shut ur mouth !
john : this needs diversity !
The British government decided to make the American<span> colonies pay a large share of the war debt from the French and Indian War. Through the Sugar Act, Stamp Act, and other taxes, the British tried to collect taxes that the </span>American<span> people considered harsh.</span>