Information: - The Socialist Democratic Vanguard Party ( French : Parti de l'avant - garde democratique socialiste ) is a political party in Morocco . - The Atlantic Ocean is the second largest of the world's oceans with a total area of about . It covers approximately 20 percent of the Earth's surface and about 29 percent of its water surface area. It separates the "Old World" from the "New World". - Morocco (', lit. "The West"; '), officially known as the Kingdom of Morocco (', lit. "The Western Kingdom"; '), is a sovereign country located in the Maghreb region of North Africa. Geographically, Morocco is characterized by a rugged mountainous interior, large tracts of desert, and a lengthy coastline along the Atlantic Ocean and Mediterranean Sea. - The Maghreb (or ; literally "sunset"; ', "the Arab West" previously known as Barbary Coast, derived from Berber), or the Greater Maghreb ("al-Maghrib al-Kabr"), is usually defined as much or most of the region of western North Africa or Northwest Africa, west of Egypt. The traditional definition as the region including the Atlas Mountains and the coastal plains of Morocco, Algeria, Tunisia, and Libya, was later superseded, especially following the 1989 formation of the Arab Maghreb Union ( ), by the inclusion of Mauritania and of the disputed territory of Western Sahara (mostly controlled by Morocco). During the Al-Andalus era in Spain (7111492), the Maghreb's inhabitants, Maghrebis, were known as "Moors"; the Muslim areas of Spain in those times were usually included in contemporary definitions of the Maghrebhence the use of "Moorish" or "Moors" to describe the Muslim inhabitants of Spain in Western sources. 'socialist democratic vanguard party' is related to which object entity through the relation of 'inception'? Choices: - 1989 - 20 - 29
A:
1989