The west was at its wildest from 1865 to 1895, when territories west of the Mississippi River remained untamed and lawless. Famous for cowboys, American Indians, lawmen, gunslingers, pioneers, and prospectors, this period in US history captures the imagination of all kids and now is brought vividly to life. The west was at its wildest from 1865 to 1895, when territories west of the Mississippi River remained untamed and lawless. Famous for cowboys, American Indians, lawmen, gunslingers, pioneers, and prospectors, this period in US history captures the imagination of all kids and now is brought vividly to life. Series Overview: A natural expansion of the exceptional Who Was? series, What Was? focuses on compelling historical events, great battles, protests and discoveries.