The Civil war confirmed the single political entity of America, led to freedom for more than four million enslaved people, hooked up an extra effective and centralized federal government, and laid the foundation for the USA's emergence as international electricity within the 20th century.
A common clarification is that the Civil war become fought over the ethical difficulty of slavery. In reality, it become the economics of slavery and the political management of that system that became critical to the conflict. A key problem become states' rights.
The primary causes of the Civil war had been the expansion of slavery and sectionalism. Slavery becomes the primary reason for Civil warfare. It added separation of each the north and the south. There have been additional problems that could have triggered the civil struggle at some point in modern technology in 1787.
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