Exactly that. But they were successful in splitting from the King of England.
You think it’s all the same?
What part is different? The United Kingdom was a Union. The Founders were all slave holders. The Founders formed a Confederacy. The Union officers offered Freedom for any slave that would join them to fight against the Rebels.
In both cases, the Rebel Armies were led by a slave owning General from Virginia.
The main difference is that King George III was not as fanatical or as willing to shed so much blood as was Lincoln.