Taney said there was no word in the Constitution that gave Congress greater power over slave property than over any other kind of property.

VOA: special.2009.05.14

By the 1830s,1840s, there were over 100 men in Charleston, South Carolina alone, making their livings full-time as slave traders.

到了十九世纪三四十年代,仅仅在南卡罗来纳的查尔斯顿地区,就有超过一百个,专职从事奴隶贸易的奴隶交易商

耶鲁公开课 - 美国内战与重建课程节选

Soil was being eroded and wasted along the Eastern seaboard, and they were using up the great soils of the Mississippi Valley and over time that slave system just somehow wasn't going to work out.

东部沿海地区的土地因被侵蚀而荒废掉,密西西比河谷地区的土地资源即将被耗尽,但就在这种情况下,奴隶制依然能维持南方的经济

耶鲁公开课 - 美国内战与重建课程节选

"It took a hurricane to speed up and really jump-start the reform efforts in New Orleans, " says Gary Robichaux, principal of McDonogh 15 (named for a slave owner who over a century ago left an endowment for building public schools in New Orleans).

FORBES: Katrina's Surprise

But in present-day Ghana, then called the Gold Coast, there were over 30 more slave forts, built and maintained by almost all of the European trading powers of the day: the Swedes, Danes, French, British, Dutch and Portuguese.

ECONOMIST: Slavery

The concept of depreciation is also credited to the railroad era, when railroad owners allocated the cost of their trains over time, but Rosenthal notes that slave owners were doing this before then.

FORBES: The Messy Link Between Slave Owners and Modern Management