The recorded fact was that the new land was useless without the labor to support it. Herman Merivale spoke at length about the economic realities of slavery Ame

The recorded fact was that the new land was useless without the labor to support it. Herman Merivale spoke at length about the economic realities of slavery America: "No economical cause can be assigned on which we may rely for the extinction of slavery." So ya, maybe by the mid-1800, additional forces were established. But the only reason that was a possibility was because, from the 1500s onward, people wanted to (and did) exploited the fertile soil. It's like taking a snapshot of 1979 and saying Michael Corleone was a legitimate business man. Also, there was other crappy stuff going on beyond slavery (but slavery-like). The building of the transcontinental railroad. Taxes on non-US citizens (with restrictions on what races could become US-citizens).