What were characteristically "modern" features of the French Revolution, the New Imperialism, and both the First and Second World Wars?

What were characteristically "modern" features of the French Revolution, the New Imperialism, and both the First and Second World Wars? In answering this question, you should define some of the characteristic attributes and processes of modernity and then use these events as illustrations.

p.s Need introduction include thesis statement, body and conclusion. Don't need to be long essay.