LOL, so you can't read? :)
2. That the South generated 72% of that money with their cotton exports?
They generated 50% of that money with their cotton exports. The remainder was created through their exports of Tobacco, Indigo, Sugar and Hemp. The total was about 72% of all trade.
Do I have that correct?
No. You apparently have a serious misunderstanding as demonstrated by your "1." statement.
Now this might come as a big surprise to you, but the exports of cotton tobacco, indigo, sugar, and hemp did not generate even one dollar of revenue for the Federal government. Not one dollar.
Do you know why that was the case?