It was only politically possible for there to be a government order after political opposition ceased. That happened because it became uneconomic.
If there were 700,000 at the end that's hardly an economic collpase. Slavery was banned by the government. It didn't 'die out'. It didn't 'collapse'.
700,000 compared to how many before? Which slaves do you suppose go on the run - the strongest healthiest, most productive slaves, or the young/old, sick, weak least productive slaves?
No they would have had the fugitive slave clause of the Confederate constitution.
Which would have been worth nothing the second they crossed that 1500 mile border they could not possibly secure.
Southerners were that inept, huh?
Its about 1500 miles. They had a total White population of maybe a couple million if that. Mid 19th century technology was nothing like modern technology. Look how much trouble the US has securing its much shorter border with Mexico today even with modern technology like planes, drones, smart fences, cameras, cars, infrared lenses, night vision, etc etc.
Political opposition never ceased, it just grew weaker than political support. In the case of both Cuba and Brazil slavery was ended over the opposition of the slave owners themselves.
Which begs the question. Having fought a bloody rebellion to gain their independence, how long would it have been before it would have been politically possible to end slavery in the Confederacy? It would have happened sooner or later, later rather than sooner. And would it have even been possible under the Confederate constitution?
700,000 compared to how many before?
Hard to say. Total number of slaves in Brazil over it's history was something like 10 million, but what max number at any one time is something I can't answer. Still 700,000 is still a considerable number. And evidence that your claim that slavery was on it's last leg is patently false.
Which would have been worth nothing the second they crossed that 1500 mile border they could not possibly secure.
Slaves running off to the north before the rebellion might have been a nagging problem but certainly didn't cause a dent in the several million slaves held at the outbreak of the rebellion. I don't see how an independent Confederacy would have changed that. Slaves still would have had to make it through hundreds of miles of the Confederacy where any black person walking around would have been challenged. Other than maybe requiring a little tightening of existing laws or a little extra surveillance it wouldn't have been a problem.
They had a total White population of maybe a couple million if that. Mid 19th century technology was nothing like modern technology.
They managed to keep millions of slaves in their place before the rebellion, unless they suddenly became incompetent boobs I don't see how they wouldn't be able to do that after independence.
Look how much trouble the US has securing its much shorter border with Mexico...
Hispanics in the U.S enjoy constitutional rights with makes it hard to stop a person on sight and demand proof of legal status. Blacks, free and slave, had no rights in the Confederacy so stopping and apprehending would not have been much of a problem for a Confederate police.