Agujeros negros (Black Holes)

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.

Acostarse, bañarse, dejar de utilizar el pañal o comer suelen ser actividades dificultosas para los niños y, a menudo, preocupan a los padres. Ahora, los mayores y los pequeños aprenderán a desarrollar actitudes positivas ante estas situaciones; los más pequeños lo pueden hacer a través de cuatro historias de niños que, como ellos, se resisten a crecer. Además, los cuentos incluyen valiosos consejos para facilitar la tarea de los padres.

José Martí was barely 16 years old when he began to fight for the independence of his homeland through his writing. At 17 he was declared an enemy of Spain and sentenced to six years of prison and hard labor. But that did not stop him. Martí dedicated his life to defending Cuba's right to independence. Today he is remembered and honored as a man of integrity--brilliant and courageous--and as a lover of freedom and peace.

One Direction es una de las bandas más divertidas y más famosas de todo el Reino Unido. ¿Te considerás un/a verdadero/a directioner? ¡Vení a leer esta enciclopedia y enterate absolutamente todo sobre tu banda favorita de la A a la Z!