Factors that led to Union victory in the Civil War

What were the vital factors that led to a Union victory in the Civil War?
Class textbook:
The American Journey: A History of the United States, Volume 1
Goldfield, Abbott, Anderson, Argersinger, Barney, 2014
Pearson ISBN.13: 978-0-205-96096-5
Writing Assignment Evaluation

1. Student used standard essay format: Introduction/Body/Conclusion.
2. Student demonstrated proper use of grammar, spelling, punctuation, citation style, etc.
3. Student demonstrated an understanding of course content and key concepts, as discussed in the text.
4. Student was able to examine, assess, evaluate, and/or analyze course content and key concepts.
5. Student provided a clear and well-developed response to the question.

Sample Solution