Q: In this task, you're given a passage, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both passage and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the passage or linked information.
Passage: On December 10, 1817, Mississippi became the 20th state admitted to the Union. By 1860, Mississippi was the nation's top cotton producing state and enslaved persons accounted for 55% of the state population. Mississippi declared its secession from the Union on March 23, 1861, and was one of the seven original Confederate States. Following the Civil War, it was restored to the Union on February 23, 1870. Until the Great Migration of the 1930s, African Americans were a majority of Mississippi's population. Mississippi was the site of many prominent events during the American Civil Rights movement, including the 1962 Ole Miss riots, the 1963 assassination of Medgar Evers, and the 1964 Freedom Summer murders. Mississippi frequently ranks low among states in measures of health, education, and development, and high in measures of poverty. In 2010, 37.3% of Mississippi's population was African American, the highest percentage for any state.
Link Information: Secession from the United States was accepted in eleven states (and failed in two others). The seceding states joined together to form the Confederate States of America (CSA).

The eleven states of the CSA, in order of their secession dates (listed in parentheses), were: South Carolina (December 20, 1860), Mississippi (January 9, 1861), Florida (January 10, 1861), Alabama (January 11, 1861), Georgia (January 19, 1861), Louisiana (January 26, 1861), Texas (February 1, 1861), Virginia (April 17, 1861), Arkansas (May 6, 1861), North Carolina (May 20, 1861), and Tennessee (June 8, 1861). Answer: 9
A:
How many states seceded from the Union after Mississippi?