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.

Winning the American Revolution was just the first step. After defeating Great Britain, the American colonies were united in name only. How would this independent nation be governed? During the summer of 1787, representatives went to Philadelphia to solve the problem. The result, the U.S. Constitution, created a new government, establishing the foundations of a free nation and setting a new course for history.

Para Fray Luis de León «El Cantar de los Cantares» tiene un valor de categoría y ejerció sobre su inteligencia una atracción singular. Todavía no había cumplido los treinta y tres años cuando lo tradujo al castellano de su original hebreo y le añadió un comentario literal. En 1580 sale a la luz su «explanatio» con el comentario literal y místico. El «Cantar» proporcionó a Fray Luis los mayores disgustos y sinsabores con la Inquisición, pero fue el libro sagrado que más deleites y consuelos le produjo y el que más hondamente modeló su espíritu. Este volumen presenta la...

¡Los niños aprenderán las palabras sencillas de español en este libro divertido y ilustrado, por ejemplo, granja, pollos, animales, caballos, ovejas, vacas, pators y cerdos!(Children will learn simple Spanish words through this fun illustrated story, for example, farm, chickens, animals, horses, sheep, cows, ducks and pigs!)A trip to a farm is always fun for little ones. From cows going "moo," "moo," "moo," to ducks going "quack," "quack," "quack," young learners will discover the sounds that different farm animals make. It’s an animal symphony of special sounds. Learn simple English...

This Spanish-language series presents the complete range of math concepts and skills students are expected to master during the first grade. The series moves sequentially, from easiest to hardest concepts, with each book covering a different math topic. The first volume reviews the math concepts students learned in kindergarten. The next six books cover counting, adding and subtracting, tables and graphs, money, patterns, and measuring. The eighth volume is a summary of the math concepts students have studied throughout the year. Each book presents situations that show the relevance of math...