This is a lively history of three Rocky Mountain states in the twentieth century. With the sure hand of an experienced writer and the engaging voice of a veteran storyteller, the well-known historian Duane A. Smith recounts the major social, political, and economic events of the period with verve and zest. Smith is thoroughly familiar with his subject and has a genuine enthusiasm for the history of the region. Written with the general reader in mind, Rocky Mountain Heartland will appeal to students, teachers, and "armchair historians" of all ages.   This is the colorful saga of how the Old West became the New West. Beginning at the end of the nineteenth century and concluding after the turn of the twenty-first, Rocky Mountain Heartland explains how Colorado, Montana, and Wyoming evolved over the course of the century. Smith is mindful of all the factors that propelled the region: mining, agriculture, water, immigration, tourism, technology, and two world wars. And he points out how the three states responded in varying ways to each of these forces.   Although this is a regional story, Smith never loses sight of the national events that influenced events in the region. As Smith skillfully shows, the vast natural resources of the three states attracted optimistic, hopeful Americans intent on getting rich, enjoying the outdoors, or creating new lives for themselves and their families. How they resolved these often-conflicting goals is the modern story of the Rocky Mountain region.