I am actually surprised. You did enough research to learn that much. Good for you! You might have learned that the North completely controlled the cotton trade. Because they did.
But you still don't understand economics. A tax on imports is virtually the same thing as a tax on exports. It's the same value being taxed whether it is exchanged for profit, or the profit taxed.
Same stuff.
Knock it off you jerk.. You now play the intellectually superior instructor to the poor lowly student. You are an ass. And you are nuts.