[OIFVeteran]

This has been explained to you on other threads but you seem to thick headed to get it. The south seceded because they believed slavery was threatened. The United States, following the precedent set by President Andrew Jackson, viewed secession as rebellion. They attempted to continue to carry out the duties of the federal government throughout the states. When they attempted to resupply a federal fort they were fired on by the rebels. The United States then called up troops to suppress the rebellion.
During the course of suppressing the rebellion the US used the well established contraband of war theory to free all slaves in areas of the country that had taken up arms against the duly elected government of the US. The US government later adopted the policy to end slavery completely throughout the US in the only constitutional authorized manner that it could, by passing a constitutional amendment.
So the south rebelled to protect slavery, the US went to war to suppress a rebellion and later adopted the end of slavery as a goal. This gave the US the moral high ground.

[jeffersondem]

“So the south rebelled to protect slavery, the US went to war to suppress a rebellion and later adopted the end of slavery as a goal. This gave the US the moral high ground.”

Before the War, the northern states treated black people badly.

During the War, the northern states treated black people badly.

After the War, the northern states treated black people badly.

Tell us more about that magic moment when the northern states were given the moral high ground.

[BroJoeK]

OIFVeteran: "This has been explained to you on other threads but you seem to thick headed to get it...."

Excellent summary, your post #501.
Highly recommended for anyone who wishes to learn a short version of the truth, as opposed to ridiculous Lost Cause propaganda.

[DiogenesLamp]

When they attempted to resupply a federal fort...

I just wanted to acquaint you with the cargo ship "USS Pawnee."

Here's another angle.

Lots of room for cargo, the guns hardly get in the way at all.

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Here is a picture of another cargo ship they sent called "Thomas Freeborn."

Here is a scene from the deck of the Cargo ship "USS Pocahontas.

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I don't know why those confederates were getting upset. It was just a bunch of supply ships setting up at the entrance to Charleston harbor.

There were five more "Cargo Ships" sent on this "resupply" mission, of which I think only one wasn't carrying cannon. (at that time. It was armed later.)

Unfortunately we can only find what pictures we can find, but we can get the armament and crew stats of the other "Cargo" ships from records.