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.

Who were the earliest Americans? When, how, and from where did they enter and spread across the continent? And what is their relationship to modern Native Americans? Anthropologists develop theories to answer these questions based on the evidence they discover. Their theories—and the discoveries that prove and disprove them—are highlighted in this fascinating volume, full of awe-inspiring facts and incredible breakthroughs. Readers will feel like anthropologists and archaeologists themselves as they read about bones and artifacts, and what they reveal about the ancient cultures that roamed...

"La máxima obra gramatical y sintáctica de la lengua castellana" Herder presenta la reedición del Diccionario de Construcción y Régimen de la Lengua Castellana, iniciado en 1872 por el lingüista colombiano Rufino José Cuervo, continuado y culminado por el Instituto Caro y Cuervo de Bogotá, y considerado por los especialistas como el mayor monumento gramatical y sintáctico de la lengua castellana. En 8 tomos con más de 8.000 páginas, este diccionario describe las funciones y los problemas gramaticales de cerca de 9.500 voces, define minuciosamente cada una de sus acepciones, y...

Aquest volum aporta els aspectes clau del desenvolupament de les ciències, però també les preguntes més substantives vinculades a la seua evolució, sense incórrer en la tecnolatria. Aquest text, avaluat ja en diferents aules de batxillerat, aporta aspectes claus del desenvolupament de les ciències, així com les preguntes més substantives vinculades al seu desenvolupament. La proposta cerca la senzillesa i pretén que l'alumnat s?habitue a un format de llibre diferent a l'habitual, doncs serà el reflex dels quals utilitzarà en el futur.

An introduction to the night sky, describing major constellations and the planets of the solar system.