The American Civil War was the bloodiest war of the 19th century and its impact continues to be felt today. It, and its origins, have been extensively studied, yet it remains a controversial subject. Based on primary research, this book contributes to the ongoing historical debate. It examines every aspect of the origins of the conflict and addresses such key questions as whether it was an avoidable tragedy or a necessary catharsis for a divided nation, how far slavery was an issue, and why the conflict errupted into violence, but did not escalate into world war.