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Because of this call, Virginia, North Carolina, Tennessee, and Arkansas joined the Confederacy. This was very bad for the Union because these four states supplied the Confederacy with soldiers, animals, industry, and food. This immensely changed the chance of the Confederacy winning independence.
When Abraham Lincoln became president and the Confederacy attacked Fort Sumner, President Abraham Lincoln distributed a call to the troops in order to save the union. What did this call cause?