How exactly did Capitalism develop in the United States, i.e. how did primitive accumulation begin...

This. Colonialism, more broadly, was the enclosing of the global commons.

slavery in the south absolutely provided the capital necessary for businessmen in the north to invest and fund industrialization. There's a reason why so many founding Fathers were from Virginia.

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It was imported. The American British colonies were resource extraction nodes in the Transatlantic "triangular trade." After the American Revolution, Alexander Hamilton's favored system involving industrial production and capital began taking hold in the northern states. As the decades wore on, the northern states (and some southern cities) began producing to rival Europe while the southern states continued on doing resource extraction.

After dipshit Andrew Jackson destroyed the Second Bank of the United States, capital became unrestricted, and superporkies like J.P. Morgan and Andrew Carnegie began taking control of the economy. This put out the old rulers of the economy: the planter aristocracy. When arguments over tariffs and slavery inevitably began, in true dialectic fashion, Lincoln obliterated the planter aristocracy and slavery.

After that, the lasseiz-faire era began, and the superporkies ran the economy into the dirt. Only Roosevelt's socdem New Deal and a pair of World Wars saved capitalism.

The South did industrialize a few decades after the war.

yeah but by the south I meant the historical south, which would later form the Confederacy, not the geographical south which would be flooded by mexicans.

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lol

Also don't forget protestant religion - played a huge role in capitalist accumulation. The idea that you are going to heaven when you gather great riches was something entirely new, as opposed to the idea of ritualistic "sacrifice" inherent in almost all cultures once accumulation reached a critical point.

The Netherlands literally invented capitalism through Calvinism.

Slavery was more expensive than prole labor, dummy. That's why it was phased out. You have to buy a slave, you have to give it a place to live, you have to feed it, you have to keep it alive, you can't damage it so much that it can't work anymore without losing out of an investment… There's quite a bit of money involved if you wanna make a return on your initial investment in buying the slave. For a prole back in the day, you just gave them a few cents and that was that. What would they eat? Where would they live? Where did they come from? Would they even survive? No one cares! There's more where they came from, so what's the problem? It was a substantially cheaper way to go about things with less constant costs and no need for an initial large investment you'd have to earn back.

genocide

Did you go to Bob Jones University or something? Yes, the "historical" South industrialized after the Reconstruction, and no Protestantism did not turn into the consumerist religion that it is until the 1980s.

Not with chattel slavery you don't. Just breed the ones you already have.

The boss already has to do all that with a prole.

Waged labor was not cheaper at all for the plantations. Plantations could be built to hold slave quarters. Slaves could be made to grow their own food and spin their own clothes. Such arrangements were the rule on plantations, not the exception. There is a reason that the planter aristocracy fought a war to keep slavery.

So, are you saying that American colonists never had substantial land to be taken from them, and they were always primarily wage labors? If you're not saying that, then what was the process similar to enclosure where the land was taken from them?