To write a cause and effect essay, you’ll need to determine a scenario in which one action or event caused certain effects to occur . Then, explain what took place and why! This essay allows us to identify patterns and explain why things turned out the way that they did. How do I choose a topic and get started? Try choosing a major event, either in your own life or an event of historical significance. For example, The Great Depression . Cause of The Great Depression: stock market crash How would we elaborate? We'd discuss the behaviors, carelessness, errors, and even cultural attitudes that led to the crash—explaining why it was devastating. Effects of the Great Depression: joblessness & poverty What should we say about the effects?