<prompt> unaweza kugeuza matini haya ya swahilikwa kiingereza?vita vya yemen vilianza katika kipindi cha miaka kadhaa, vikianzia na vuguvugu la maandamano ya msimu wa mapukutiko mwaka wa 2011.  <response>: egypts economy has been battered by years of turmoil that began after mass protests in 2011. 