Of course it was important, but I disagree that the system depended on it to maintain its very existence. If slavery didn't happen, the market still would have

Of course it was important, but I disagree that the system depended on it to maintain its very existence. If slavery didn't happen, the market still would have evolved around that fact. Capitalism would still exist, just with higher labor costs. Maybe cotton prices would have been a little higher as a result, and maybe the industrial revolution wouldn't have happened as quickly. Still would've happened though. I don't see much evidence to suggest otherwise, but I'll have to check out that book and see if the arguments are any good.