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.

Examines the nature of human rights, including the gradual development of the idea that all people, regardless of gender, color, or wealth, are citizens with rights, not just subjects with duties, and discusses the growth of social rights and the case against torture.

Whether you call your January 6th celebration El Dia de los Reyes or the Feast of the Epiphany, you're celebrating a day dedicated to the three kings. Sometimes called the three wise men or the magi, these figures are part of the Christmas story and often appear in nativity scenes during this time of year. In some places, they're more important than Santa Claus. In this volume, readers discover the history of the three kings' story as well as how they are celebrated in cultures around the world today.

Did you know that most animals in the world don't have backbones? Learn more about invertebrates in this engaging, Spanish-translated nonfiction book. Readers will learn all about mollusks, arthropods, arachnids, and crustaceans while being stimulated from cover to cover with its detailed images and charts, intriguing facts, and informative text.

For Barack Obama, becoming president of the United States brought big changesfor him, his family, and the country. Every day he faces important meetings, tough decisions, and the opportunity to meet new people. But he still finds time to invite friends over for a movie and walk Bo, the White House Dog, with his daughters, Sasha and Malia. How does he do it all? Follow the President through his day and find out what it's like to be Barack Obama. Para Barack Obama, convertirse en presidente de Estados Unidos fue un gran cambio, tanto para l, como para su familia y para el pas. Todos los das...