<span>Rosa Brítez is a prevalent Paraguayan craftsman, conceived in Ita, the city of the Central Department of Paraguay, on April 9, 1941. She has an extremely specific style and she commits to shape in clay embellishing and agent figures of her nation. These articles are exceptionally esteemed in Paraguay and additionally in different nations.</span>
El vicepresidente de la Nación tiene la obligación formal de ser el presidente del senado de ese país.
It would be "los libros", since "los libros" means "the books".
Source: I'm fluent in Spanish.