El ferrocarril transcontinental (The Transcontinental Railroad)

People today refer to the Midwestern and prairie states as flyover country. During the Civil War, crossing those areas was the biggest obstacle in uniting the East and West Coasts of our divided nation. An act of Congress in 1862 authorized the Central Pacific and the Union Pacific railroad companies to build a railroad that would link the coasts. Seven years later, on May 10, 1869, an overwhelmingly immigrant labor force completed the task when a rail line was join in Promontory, Utah. The states had become united at last.

Leonard B. Meyer explica en este libro como funcionan los mecanismos de la mente para percibir y entender la musica. Sus paginas constituyen un lucido estudio de la psicologia de la percepcion musical que ha sido profusamente citado por musicologos, compositores y filosofos desde su primera edicion de 1956. Entre sus admiradores figuran Umberto Eco y Enrico Fubini, cuyos comentarios aparecen recogidos en el amplio prologo escrito por el prestigioso compositor Jose Luis Turina, autor tambien de la traduccion. &la" El objeto principal de este ensayo --senala Turina-- es doble: de un lado,...

Illustrations and text present the history, geography, people, politics and government, economy, and social life and customs of Arizona, the Grand Canyon State.

Learn all about Major League Soccer. Discover fascinating facts, from record-breaking stars to winning teams and important positions.

From the itsy-bitsy to the huge and hairy, kids will be drawn into the spider’s world. This book shows spiders going about their lives, including building webs, catching prey, and hatching babies.