[Non-Sequitur]

And the North had water...lots of it. You need that for industry. The South had farmland...lots of it. You need that for agriculture...along with cheap labor. Spot the difference?

Both sides needed cheap labor. The south owned theirs. Spot the difference?

[P-40]

Both sides needed cheap labor. The south owned theirs. Spot the difference?

The South needed vast amounts of cheap labor while the North needed relatively little. Cheap labor was critical to the South but less so to the North. Both side owned their labor. That the North gave theirs up before the war does not change the fact that they owned it and actively engaged in importing it.