The reasons for the secession were due to due to slavery, tariffs, state rights, etc.
Tensions in the United States grew in the 1850s due to slavery, tariffs, state rights, etc. Then, the 1860 election occurred and this was the final straw for the Southern states.
Abraham Lincoln won even though he was not on Southern ballots. Therefore, they urged Southern Democrats to leave the union.
In December 1860, the political leaders in the region discussed about seceding from the union. This means to withdraw from a federation.
In conclusion, the above analysis led to the secession.
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