It wasn't just cotton. It was other stuff too, but the total demonstrates that the 1/4th of the population in the South was producing nearly 73% of all revenue (on which taxes were paid) while the 3/4ths of the population in the North was only producing about 27% of the total.
Run the numbers, and it shows the South was paying nearly 12 times the taxes of the North per capita. (Which was the original point to which you objected.)
“Also, if you run those numbers I posted for 1859, you will see that the South was producing 73% of all revenue from Europe.”
I’m not seeing that and it isn’t true anyway, as the real sources I’ve posted tell another story.