The Confederacy was born on February 8, 1861, when seven slave states: South Carolina, Mississippi, Florida, Alabama, Georgia, Louisiana, and Texas exercised their right to secede from the united States.

The Union was dissolved and a new nation was created.

The southern states exercised their right to alter or abolish their form of government which was guaranteed to them in th Declaration of Independence.

In the Tenth Amendment, secession was not prohibited to the states and was therefore it was a power that was reserved to them.

The right to alter or abolish a government and create a new one is one of our unalienable rights,

In 1776, the 13 British Colonists in North America exercised their right to secede from Great Britain. When the King and Parliament failed to respond to their griviances the colonies had no other recourse. 

In 1861 seven of the Southern States exercised the same right when they seceded from the united States. Lincoln's refused to recognize the right of the states to secede, and started a war to prevent the southern states from leaving the Union.

Abraham Lincoln understood that  80 percent of the tax revenue came from the eleven southern states that had seceded.

When asled why by Horace Greeley why he didn't let the states leave in peace, he allegedly answered "If I did that who would fund the governemnt."

If the 13 colonies had the  lawful right to secede from Great Britain in 1776,  the 11 southern states had the same right to secede from the United States in 1861?

The Civil War was not a war between the states, it was a war against the states.

President Lincoln did not believe that the 11 southern states had seceded, he just considered them to be in rebellion, It was his position that they had never left the union, If that were true why did the states need to be re-admitted.