Not long ago, the United States was an open frontier with none of today's conveniences. The fascinating new ""Building America: Then and Now"" set features some of the most famous and important construction projects that created the country we know today. With the aid of primary source passages and full-color and black-and-white photographs and illustrations, each engaging title teaches students the relevant history surrounding a specific project. Readers will be inspired by the triumphant stories of great feats of engineering, the innovations in technology, the coming together of a motivated workforce, and the unification of the country. The special ""Building America Now"" features in each title invite readers to compare the costs, building practices, and materials of more recent construction projects that continue to shape the American landscape.