In 1870, Mississippi was readmitted to the Union as military rule ended
Mississippi officially rejoined the United States in 1870, ending years of post-Civil War military rule and signaling a complex new chapter in the nation's difficult Reconstruction era.
On February 23, 1870, President Ulysses S. Grant signed the act that readmitted Mississippi to the Union. This followed years of federal military oversight intended to protect the rights of formerly enslaved people and ensure the state adopted a new constitution that recognized the 14th and 15th Amendments.
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