“The way the 3/4ths bought the European imports is by cleverly using legislation to get the money away from the 1/3rd that produced it, and then using that money to buy the European products.”
So clever that you can’t even explain it.
To recap:
The reason for secession was the South’s desire to preserve slavery.
The trigger for secession was the election of Abraham Lincoln, which fed fear of the abolitionist foundation of the Republican Party.
The American Civil War began when units of the South Carolina Militia fired upon a Union fort in Charleston harbor.
Careful - your restatement of the obvious may result in DegenerateLamp posting his protests in large font size and perhaps even (gasp!) multi-colors!
When a bank is robbed, it is unnecessary to explain how it was robbed in order to recognize the fact that it was robbed. You can tell it was robbed just by looking at the quantity of money that was no longer there.
Simply looking at the money will tell you where it went. We can see clearly from the available data that the money was produced in the South, but somehow ended up in the pockets of Northeastern Gentry.
I've shown you how that was done (through biased laws that favored Northeastern industry) but you don't like that explanation because it does not support what you wish to believe.
So the money clearly moved. How about *YOU* explain how that money moved from the South without biased laws favoring the Northeast?

The civil war was about the corrupt northeastern gentry lining their pockets through manipulating the power of Washington DC to favor their own interests.
Corrupt then, still corrupt now. Paid for in blood, and the evil powers are still in charge and still enriching themselves through government power.