From 1861 to 1865, the U.S. Civil War brought about more American deaths than any other conflict in the nation’s history – but why? Many assume the Civil War was fought solely on the issue of slavery, but there were other cultural and economic factors. Ultimately, those who seceded from the Union believed each state had the right to leave, and those who remained did not. Why each of the eleven Confederate states left in the first place is a bit more complicated.

Society

The initial European colonies were primarily agrarian – meaning that farming drove most of the economy. By the late 1700s, however, the Industrial Revolution had begun. New England cities began to fill as factories replaced farms, and agriculture, in general, moved west. By the time the nation split in the mid-1800s, the northern and eastern states held most of their populations in large cities built around industry, commerce, and financial services. Agriculture dominated the economy in the South, which was largely rural.

As the two regions grew more distinct from each other in the way people lived, their respective cultures developed differently.

Economics

By the time of the Civil War, cotton was the primary crop grown in the South. As the saying went, “cotton is king.” However, if the crops didn’t produce, farmers often had to turn to banks in the North – or even overseas – for loans. While the southern economy was mostly tied to the success of a single crop, the northern industries were much more stable.

State’s Rights

The balance of power in the United States has always been an issue. As is still the case today, the more industrialized, urban areas of the North wanted a stronger federal government and more submissive states. Rural groups who lived farther from the nation’s capital believed in state sovereignty and preferred as little federal involvement in their lives as possible.

Slavery

As the North urbanized and industrialized, slavery became obsolete. In the South, however, the practice was vital to the survival of the cotton industry. Therefore, both the economy the culture of the South were built upon it.

While each of the 11 states that seceded named the preservation of slavery as a cause in its article of secession, it was less about whether slavery should be abolished and more about who should have the authority to maintain or end it: the nation or the individual state.

The issue of slavery inspired passion on each side: To the abolitionist, slaveholders were human rights violators. To the slaveholders, the abolitionists were tyrants with no right to force their will upon anyone else. As the nation grew, each new state had to enter the Union as free or slave. This caused the tension to grow even further between the two sides.

Two Nations Grown Apart

The North and the South had different economic priorities and cultural beliefs. They had different views on whether slavery was acceptable and just whose authority it was to decide the matter. Just as the colonists had many years before, the Confederates felt the government that ruled them did not represent them or care for their causes.

Like the colonists before them, they decided to break away and form a new nation. President Lincoln refused to allow secession, and the Union fought to make the former states rejoin, just as Britain had. It was called by many the Second Revolution – but this time, the new nation lost.