How did the Dutch revolt affect European politics in general?

The Crusades are probably the greatest symbol of the religious enthusiasm of the age. What were the goals of the Crusades? Targets? What motivated people to go on crusade besides religious zeal? How do we account for their general failure? How were the Crusades viewed by the Muslims? What was the lasting impact of the Crusades?
In the last third of the sixteenth and early seventeenth centuries, European diplomacy revolved around the situation in the Low Countries. Why? What was the impact of the revolt of the Netherlands on the Low Countries, Spain, and England. How did the Dutch revolt affect European politics in general?

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