....In regard to most articles of the Constitution, the document is a word-for-word duplicate of the United States Constitution. The major differences between the two constitutions was the Confederacy's greater emphasis on the rights of individual member states, and an explicit support of slavery.
Slavery
The constitution forbade the practice of importing slaves from outside the Confederacy, but disallowed the national government from outlawing slavery in the following key provision:
No bill of attainder, ex post facto law, or law denying or impairing the right of property in negro slaves shall be passed [by Congress]
The constitution likewise prohibited the Confederate Congress from abolishing or limiting slavery in Confederate territories (unlike the United States, where, prior to the Dred Scott decision, Congress had prohibited slavery in some territories). The legal basis for slavery in the Confederacy is largely presented as an extension of property rights.
http://en.wikipedia.org/wiki/Confederat ... nstitution