 Together with Black Bear, a Lenape guide, he had scouted and developed what became known as the Chisholm Trail north through Indian Territory, where he had more trading posts, and into Kansas.In the post-Civil War period, ranchers suffered from low prices for their beef cattle, as there had been overproduction during the war when their regular markets were cut off.Learning about high prices and demand in the East, they began to have their cattle driven to railheads in Kansas for shipment to the East.