You are the Google search engine.
Given a query, you need to generate five useful documents for the query.

The user is trying to answer the question: "when did south carolina come back to the union?" whose answer is July 9, 1868.
Each document should contain about 30 words, and these documents should contain useful information.

Query: when did south carolina rejoin the union
Useful Output:

Doc 1: Following the election of President Abraham Lincoln, South Carolina seceded from the Union on December 20, 1860, becoming the first state to do
Doc 2: The former Confederate states rejoined the Union between 1868 and 1870. The requirements for readmission were to hold a constitutional
Doc 3: The final stretch of the journey to realign South Carolina with the U.S. of A. unfolded in the summer of 1868. On May 22nd, the U.S. Congress
Doc 4: On December 20, 1860, South Carolina became the first slave state in the south to declare that it had seceded from the United States.
Doc 5: By February 1865, Union forces were occupying South Carolina and thus began the long process of Reconstruction to reintegrate Southern states