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.

Cuano eran ni�os, Sean Devine, Jimmy Marcus y Dave Boyle eran amigos. Un d�a, un extra�o coche se detuvo en su calle. Uno de los chicos subi� al coche, pero los otros dos no lo hicieron. Y sucedi� algo terrible, algo que acab� con su amistad y que les cambi� a los tres para siempre.Veinticinco a�os m�s tarde, Devine trabaja de detective para el Departamento de Homicidios, Marcus es un ex convicto que tiene una tienda de barrio, y Boyle intenta salvar su matrimonio y mantener sus demonios a raya: demonios que le incitan a hacer cosas terribles.Mystic River ha sido llevada al...

Discusses the various features of Australia, including its climate, mountains, rivers, lakes, animals, vegetation, coral reefs, flightless birds, population, and cities, and history of the Aborigines.

Bridges are a big part of how people get from place to place. But how do they work and how are they built? In this engaging text, readers will explore these important engineering marvels that link places divided by water. Along the way they’ll learn how to build their own model bridge with a step-by-step guide accompanied by full-color photographs of each step. Accessible text illuminates the science behind every span we drive over—and sometimes under!

Los niños aprenderán las frases y las palabras sencillas de español en este libro divertido y ilustrado, por ejemplo, ¿Hola, cómo estás? ¿Cómo te llamas? ¿Qué hora es? ¡Y más! (Children will learn simple Spanish phrases and words through this fun illustrated story, for example, How are you? What is your name? What time is it? And more!) Meet Philip and Martha, two young students who meet at school and become friends. Young learners will find the simple greetings, questions and statements easy to understand. Learn simple English words and phrases with the corresponding version...