“The bulk of that money came from the South.”
How? Tariffs are in IMPORTS. There’s no way 1/3 of the population bought 3/4 of the goods.
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.
The 1/3rd that produced 72% of the total revenue stream from Europe.
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.
All that would have changed with secession. That money would have no longer streamed through the pockets of the Northeastern gentry. You keep ignoring where the money was coming from because it doesn't not support what you wish to believe.