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
Influence of Arabic on other languages non-maghrebi French speakers. Arabic-derived words have entered standard or metropolitan French from two main sources. As is the case for many other European languages, one principal source was Spanish. The other was directly from Maghrebi Arabic as a result of the occupation and colonisation of the Maghreb, particularly Algeria, in the 19th and 20th centuries. Examples of the latter include 'bled', a slang term for place of origin, following this word's usage in the Maghreb, as opposed to the Standard Arabic "balad", 'country', along with the Maghrebi term 'kif kif' and 'tabeeb', a slang term for 'doctor'. A small number