Juan de Oñate and other conquistadores brought horses, which changed the way the Plains Indians hunted. They quickly adapted to hunting bison on horseback as nomadic hunters. It began with the Apache who stole horses from the Spaniards. Horses also escaped into the wild. The Comanche soon followed and both tribes based their wealth and power on the horse. Horses were traded to or captured by other tribes and by the mid 1700s most Plains Indians had one or more horses. The next advance came from the British who brought guns to North America. The British also pushed many of the Eastern Woodlands tribes onto the Great Plains. After the 1850s, the horse culture of the Plains Indians ended as tribes were moved to Indian reservations.