What does the word 'de' mean in Spanish?

Para hacer una llamada de eeuu a españa, se necesita

Choose one of the following locations: guayaquil, sucre, or la paz. then, write an e-mail of 7-10 sentences, in english, as if it's from a travel agent who is trying to persuade a family in the united states to visit the city you chose. in the e-mail describe the each of the following in at least two sentences each: location, culture, sites, food, and activities. your descriptions must be persuasive and different from the lessons.

En el de ayer,presentaron una noticia sobre el calentamiento global