When economic and social conflicts escalated how many states from the South seceded from the Union?

Eleven Southern states seceded from the Union in the lead-up to the Civil War, primarily due to escalating economic and social conflicts, particularly over issues like slavery and states' rights. These states formed the Confederate States of America, starting with South Carolina in December 1860, followed by others in early 1861. The secession ultimately contributed to the outbreak of the Civil War.