If there were buildings, roads, etc that were built, many of them were destroyed.
In fact, I would love to learn more about history from your perspective. Perhaps you can elaborate or share some literature that I can read at my leisure. Also, I'm curious to hear any opinions you may have on #metoo, or women in technology should you be willing to indulge me.
For your convenience, I quote you below:
"Further it was precisely the areas which were built up by slavery that were destroyed during the Civil War. Thus negating any advantage gained from slavery."