The Muskingum Valley in the eastern portion was occupied about 1750 by Delawares from eastern Pennsylvania, the Scioto by Shawnees, and the northeast corner of the territory by detachments of Iroquois, chiefly Senecas.[155] The long wars between the Algonquin Indians of the north and the Appalachian tribes of the south kept the district of Kentucky a No Man's Land, in convenient vacancy for occupation by the white settlers, when they began the westward movement.[156] [Map page 156.] [Sidenote: Slavery as form of historical movement.] This desolation is produced partly by killing, but chiefly by enslavement of prisoners and the flight of the conquered.

Both constitute compulsory migrations of far-reaching effect in the fusion of races and the blending of civilizations.

The thousands of Greek slaves who were brought to ancient Rome contributed to its refinement and polish.

All the nations of the known world, from Briton to Syrian and Jew, were represented in the slave markets of the imperial capital, and contributed their elements to the final composition of the Roman people.
When we read of ninety-seven thousand Hebrews whom Titus sold into bondage after the fall of Jerusalem, of forty thousand Greeks sold by Lucullus after one victory, and the auction _sub corona_ of whole tribes in Gaul by Caesar, the scale of this forcible transfer becomes apparent, and its power as an agent of race amalgamation.

Senator Sam Houston of Texas, speaking of the Comanche Indians, in the United States Senate, December 31, 1854, said: "There are not less than two thousand prisoners (whites) in the hands of the Comanches, four hundred in one band in my own state....