What was a major cause of the Civil War?

The major cause of the Civil War was rooted in the economic differences between the North and the South. The Northern economy was largely industrialized and relied on wage labor, while the Southern economy was predominantly agrarian and depended heavily on slave labor for its agricultural production, particularly in cotton. These conflicting economic interests led to differing perspectives on issues such as tariffs, commerce, and, most critically, the institution of slavery.

As the nation expanded westward, debates surrounding whether new territories should be free or slave-holding states intensified the sectional divide. The South's economic reliance on slavery created a defensive stance against any policies that threatened this system, while the North increasingly viewed slavery as a moral issue and an impediment to economic progress. The culmination of these tensions over economic interests and the fundamental disagreements about the role of slavery in American society ultimately sparked the Civil War.

Other options do not capture this primary cause effectively. The expansion of voting rights, while significant, was not a central factor driving the divide leading to the war. The Treaty of Paris, which ended the American Revolutionary War, occurred long before the Civil War and did not directly contribute to its causes. Additionally, while foreign powers may have had some influence on American politics, they were not a direct cause