If true, why would the South not sell cotton to the Northern states? They got the same price regardless.
Most countries outlawed slavery without a civil war and many did not act until after our civil war.
Most did. So why did the Southern states go and launch a civil war to protect slavery? Especially if it was a dying institution and all.
If Britain and France could sell their goods in the south without the penalty of the tariff, they would compete with the north and in the long be willing to pay higher prices. It’s simple trade and those that sell are the ones who buy. You missed the point however - cotton was picked by slaves - where was the “Northern” outrage? Did I miss the northern boycott of southern cotton?
Your second comment misses the point that is being made that the south did not fight to protect slavery. It is a common charge you make but it is false.
Because the Northern states were shooting at them.