Final answer:
The Civil War was caused by a combination of factors, including slavery, economic differences, religion, culture, and ethnicity.
Step-by-step explanation:
The Civil War was caused by a combination of factors, including slavery, economic differences, religion, culture, and ethnicity. Slavery played a major role in the tensions between the North and South, as the North sought to abolish slavery while the South fought to maintain it. The election of Abraham Lincoln as president in 1860 sparked the secession of several Southern states, leading to the formation of the Confederate States of America. The war became inevitable when the Confederate attack on Fort Sumter occurred. The conflict brought significant changes to American life, politically, economically, and socially.