La Segunda Guerra Mundial (World War II)

The early nineteenth century in the United States was a study of contrasts. On the one hand, the Jazz Age brought cultural liberation, vivacity, and reckless consumption; on the other, the Great Depression brought poverty and desperation to millions. Explore these periods in American history through the eyes of the people who lived them.

California grew by leaps and bounds between the Gold Rush and 1900. People from different backgrounds emigrated to California from across America and around the world in search of a new life. This primary source reader focuses on immigration in California from the time of the Gold Rush to the end of the nineteenth century. Primary source documents allow students to see different points of view, and help students look at the world and current issues with a historical lens. This Interactiv-eBook builds literacy and social studies content knowledge through the use of intriguing primary sources...

Éste es un libro pensado para estudiantes de lengua española de un nivel medio (bachillerato, primeros cursos universitarios), para los que la gramática puede resultar una materia excesivamente árida y complicada. En él se presentan de forma ordenada los principios básicos de la morfología y sintaxis del español, con explicaciones detalladas, múltiples ejemplos y prestando una atención especial a aquellas cuestiones que generalmente provocan mayores problemas de comprensión. El texto está dividido en tres grandes partes. En la inicial se trata de cuestiones generales sobre la...

Discusses the role of the gases surrounding Earth and the relationship of the atmosphere to weather. Presented in English and Spanish.

In this Spanish title, learn about what makes endangered jungle animals so unique and why they need to be protected.