Why did the election of Lincoln resut in secession?

The election of Abraham Lincoln in 1860 heightened fears among Southern states that their interests and way of life, particularly regarding slavery, were under threat. Lincoln's platform opposed the expansion of slavery into new territories, which alarmed Southern leaders who believed that the Republican Party's success would lead to the eventual abolition of slavery. In response, several Southern states seceded from the Union, viewing secession as a means to protect their rights and maintain their social and economic systems. This ultimately led to the outbreak of the Civil War.