I thought much of biz tech came from US slavery..?? Which then went to railroads and other corporations... Specifically org charts and things like that. ...a

I thought much of biz tech came from US slavery..?? Which then went to railroads and other corporations... Specifically org charts and things like that. ...ah I might be wrong about the org charts. Maybe. I do now remember the actuarial biz started down on some port street -- dealing with insurance and risk of transporting slaves. Yeah, think the org charts were slavery too, but in the US.