Because Lincoln's election as President meant there would be no new slave-states. So the South would always be outvoted in Congress, which would tend to pass laws that favoured the North over the South.
Because Lincoln had won the election of 1860 on a ticket of no new slave-states. So the South was doomed to be outvoted in Congress.
They left the union to join the confedirety
President Buchanan did not force seceding states to return to the Union.
Withdrawing states say they are seceding from the union.
Because Lincoln had won the 1860 election on a ticket of no new slave-states.
The Southern States believed that they had the right to secede because the Union had violated the US Constitution. Because of this the Southern States believed that the Republican dominated Congress and the views of President elect Lincoln would continue to do so, thus the Southern States believed that they had the right to leave the Union.
Because they believed they had certain beliefs and they could go anywhere with them, which ended up enabling them to make the Confederacy.
Most Southerners believed that states had freely been created and joined the Union and could freely leave the Union. President Lincoln and the North did not believe this.
Seceding from the Union??
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Secession
Lincoln
Secession