Answer:
Step-by-step explanation:
- cause
- Slavery. At the heart of the divide between the North and the South was slavery.
- States' Rights. The idea of states' rights was not new to the Civil War. ...
Expansion
- consequence
- The Civil War confirmed the single political entity of the United States, led to freedom for more than four million enslaved Americans, established a more powerful and centralized federal government, and laid the foundation for America's emergence as a world power in the 20th century.