The most apparent cause was the thirty years war. It was a terrible destructive war that spanned from 1618 to 1648. The people thought that they were illuminating human culture and intellect after the middle ages. A lot of historians disagree on when exactly it began, but most would say that it started during the scientific revolution in the 1600s.
The 1933 elections allowed the Nazi party to take control of the 33% of the Reichstag, or most commonly known as the German version of a parliament. They elected their leader, Adolf Hitler, because of the man's ability to convince the people of Germany using his powerful speeches.
William's and Mary's acceptance of the English throne in 1688 resulted in political and religious "<span>tolerance," although it should be noted that this hold less meaning as it does today. </span>
Political corruption, peasant unrest, and governmental incompetence.
Puerto Rico is where is continued even after the Spanish forces surrendered in Cuba