I'm sorry. I really am, but this is a fact. Let's just do a quick experiment:
"But Lincoln, the war was fought over state's rights."
State's rights to do what? Practice -blam!-ing slavery.
I'm sorry. The entire conflict was caused directly by slavey, and all other reasoning anybody can cite and conclude are indirectly related to slavey.
Get over it. The Civil War wasn't fought because the south wanted "freedom." The irony of that statement is beyond imagination. They fought for the freedom to own people as property!!? Lmao what? That literally makes no -blam!-ing sense.
"But Lincoln, not every solider fought to keep slavey in place. Most fought for their country and their state."
The south got crushed, and they had it coming. Fighting for a government that allows and actively supports the practice of slavery equally as despicable.
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On a more serious note, the civil war was caused by slavery, but not directly. The entire thing was INDIRECTLY caused by slavery.