Erg (landform) and western Asia, and Central Australia. In South America, ergs are limited by the Andes Mountains, but they do contain extremely large dunes in coastal Peru and northwestern Argentina. They are also found in several parts of the northeast coast of Brazil. The only active erg in North America is in the Gran Desierto de Altar () that extends from the Sonoran Desert in the northwestern Mexican state of Sonora to the Yuma Desert of Arizona and the Algodones Dunes of southeastern California. An erg that has been fixed by vegetation forms the Nebraska Sandhills (). Sand seas and dune
What Is a Nation? Anderson also points out that the reason many French citizens of Renan's time knew anything of these massacres was because they learned of them in state-run schools. Thus, the state itself preserved the knowledge which needed to be forgotten for national identity. In a 1995 book, "For Love of Country: an essay on patriotism and nationalism", Maurizio Viroli called Renan's essay "the most influential late nineteenth-century interpretation of the meaning of nation", because of its focus on the "spiritual principle" as opposed to race, religion or geography. Other authors, like Joxe Azurmendi, consider that really there is no such opposition