"Look to the Southeast, where, as Taylor has noted, "colonial societies sustained a slave system more oppressive than anything practiced in Europe" and "the slave-owners relied on Indians to catch runaways." There, too, the native groups, descended from Mississippian societies, were far more hierarchical and autocratically ruled than the Algonkian- and Iroquoian-speaking groups in the Northeast. As Gallay has documented, indigenous societies cooperated fully with the slave-trading system, sending war captives to colonists for sale overseas. In the Northeast, by contrast, the Wendat (Huron) and Haudenosaunee either killed or, more common, adopted captives; involuntary servitude, though it occurred, was strikingly rarer. On the map, the division line between slave and non-slave societies occurs in Virginia, broadly anticipating the Mason-Dixon line that later split slave states from free. The repeated pattern doubtless has to do with geography--southeastern climate and soil favor plantation crops like tobacco and cotton. And southern colonists' preference for slavery presumably reflected their different ethnic, class, and religious backgrounds. But"