Secession is the act of withdrawing from a political union or organization. It is often used to refer to the withdrawal of states from the United States in the mid-19th century, which led to the American Civil War. The two crossword solutions for the term 'secession' are 'BREAKAWAY' and 'warof'. BREAKAWAY refers to the act of leaving a political union or organization, while warof refers to the American Civil War, which was fought between the Union and Confederate states over the issue of secession.