Field projects : institutional strengthening of the Arab Maghreb Union ; observatory of regional integration in North Africa ; addressing sustainable development challenges in North Africa ; harmonization of policies to build a North Africa knowledge economy . The activities under this subprogramme , which have been formulated by drawing upon Component 2 of subprogramme 7 of programme 14 of the biennial programme plan for the period 2008-2009 , are under the responsibility of the ECA Subregional Office for West African ( SRO-WA ) .