You didn't do that yourself, or you would know better.
Or maybe, since you posted this , you wouldn't know better. Hard to say.
At any rate, I did: Google searching "store of capital" gets little of relevance, except this tangent: https://en.wikipedia.org/wiki/Store_of_value - which specifically mentions "livestock" as a commonly employed store of value (slaves were of course much more valuable, and notably slower to depreciate etc, than the other livestock on the Plantations of the American south. The productive lifespan of a human being is twice that of even the best horse, and five times that of a dairy cow or breeding bull). Recall that cattle were at the source of the word "capital" itself - one of the earliest stores of capital.
There is a reason why you get nothing of relevance when you google search the term, it’s because you are misusing and making up terms as has been repeatedly brought to your attention.
Google searching "capital asset" turns up this: http://www.investopedia.com/terms/c/capitalasset.asp I'm not sure what you think such restrictions as the category "capital asset" imply, but the only reason a slave would not be one is that slaves could be rented out or sold for quick cash at need. Is that what you meant - that slaves were not a "store of capital" because they could be easily sold or rented out for money?
What didn't you understand about the Investopedia definition? Apparently everything....you can't pay your bills with slaves. You need to first sell the slaves to get the cash you can use to pay your bills. That's in part why, as previously and repeatedly explained, slaves were capital assets. They weren't capital. They were not cash. As previously and repeatedly explained slaves were treated like any piece of hardware.
Like this? : http://www.civilwarcauses.org/stat.htm Note that this author is conservative in their comparative valuation of slaves - modern economists like Thomas Piketty estimate it as even greater. But even conservatively their Confederacy was almost 50% wealthier, per capita, than the Union, before the Civil War - entirely due to the capital value of slaves.
No, as previously and repeatedly explained and documented that’s bullshit.
So this source is counting slaves as neither "skilled workers" (which many were) nor "capital". Any idea what category they were put in?
I think the article was clear enough. The fact is the South was primarily an agrarian. You didn't find "skilled" workers are farms. Farm work was brute labor, tilling the fields, seeding the fields, weeding the fields, and harvesting the fields. The North had industrialized and industrialization creates the need for skilled workers. Contrary to your assertions, the North was an economic powerhouse. That's why the North won the Civil War.
Here's an article based on what standard modern economists who do have a category for slaves (capital) have routinely concluded: http://opinionator.blogs.nytimes.com/2013/03/30/king-cottons-long-shadow/?_r=0
Well, for starters, a professor of African and African-American Studies isn't an economist.

With the legacy we have all around us now:
You have an odd definition of "poorest".
Try this map - it's linked from the same page as yours:
https://en.wikipedia.org/wiki/File:Map_of_U.S._states_by_GDP_per_capita_in_U.S._dollars_(2012).svg
Notice that doesn't even record per capita wealth - in which the contrast between the Confederacy and the rest of the country, even 150 years after the Civil War, is even greater.
Or try this measure of "poor" https://en.wikipedia.org/wiki/List_of_U.S._states_by_Gini_coefficient in which even the recent explosive growth of income inequality in a couple of northern States (Michigan, Alaska, New York, etc),
Actually, it isn't. What you are attempting to do here is change the issue from aggregate wealth to income inequality. The issue wasn't income inequality. The issue was aggregate wealth. The issue here is your assertion that Tubman's stealing of slaves somehow crippled the Southern economy....remember? And the facts are just not there to support your assertion as is usually the case with you.
You don't seem to be able to discern the difference. As has been previously repeatedly explained to you, when slavery ended, the instruments of wealth generation didn't vanish just because slavery ended. The formerly enslaved laborers didn't vanish. The land didn't vanish. The crops didn't vanish. The demand for agricultural products didn't vanish. It was all still there, except for the damage incurred by warfare, all the income producing assets remained. Ending the institution of slavery didn't end the Southern economy. As previously pointed out to you, it just ended how the wealth was distributed. Instead of wealthy plantation owners, you had individual farmers who either sharecropped or farmed their own lands.
Tubman's "stealing" (i.e. freeing) of slaves didn't demolish the Southern economy. What adversely affected the Southern economy was the decision of Southern white leaders to secede from the Union and the resulting war. That's what damaged the Southern economy during the Civil War years. It wasn't Tubman's participation in the Underground Railroad as you have previously asserted.
on top of the 20th Century's migration of six million of the Confederacy's poorest people into that north, still not integrated into the northern civilization,
has not made up for the legacy of slavery.
That's not the least bit relevant to the discussion. Let me remind you, the Tubman, the Civil War, and slavery were issues of the 19th century, not the 20th century.
Because Tubman's side won the Civil War. The capital she and her allies stole, the major wealth of the South and the single largest store of capital in the US, was never returned to the Andrew Jacksons of the Confederacy. And they never figured out what they were doing wrong.
Well, that's all nonsense as has been repeatedly explained and debunked, and you like to promulgate it, but that doesn't make it true. While slavery was a major institution in the South, it wasn't in the North. And the North was the dominant economic power for the reasons previously. And as much as you want to make it an economic issue, slavery was a moral issue. Most of the Northern abolitionists were not wealthy people.
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