What was the “crisis” of Europe at the beginning of the twentieth century?

What was the “crisis” of Europe at the beginning of the twentieth century? How was WWI part of that crisis, and how was the treaty that ended the Great War an attempt to resolve that crisis? How were the dictatorships that arose an attempt to confront the breakdown of the European order? Be sure to use proper citation methods for quotations and summaries of others’ arguments or opinions. Please, use standard 1 inch margins, and make certain the pages are numbered. Bibliography at end.