▁Tre aty ▁of ▁Al ge cir as ▁signed ▁in ▁April ▁ 1 9 0 6 , ▁where ▁the ▁northern ▁part ▁of ▁Mor oc co ▁was ▁placed ▁under ▁Spanish ▁administration , ▁the ▁Spanish ▁started ▁to ▁develop ▁this ▁min eral - rich ▁area , ▁and ▁numerous ▁narrow ▁gauge ▁rail ways ▁were ▁built . ▁ ▁See ▁also ▁▁ ▁List ▁of ▁Spanish ▁high ▁commission ers ▁in ▁Mor oc co ▁ ▁List ▁of ▁Spanish ▁colonial ▁wars ▁in ▁Mor oc co ▁ ▁Reg ular es ▁ ▁Notes ▁ ▁References ▁ ▁S ources ▁ ▁Further ▁reading ▁Cal der wood , ▁Eric . ▁ 2 0 1 8 . ▁Col onial ▁al - And alus : ▁Spain ▁and ▁the ▁making ▁of ▁modern ▁Mor oc can ▁culture . ▁Harvard ▁University ▁Press ▁" Min ▁K hal ifa ▁Mar rak esh ▁I la ▁Mu ’ t amar ▁Mag h reb ▁El ▁Arab i ." ▁( From ▁the ▁cal i ph ▁of ▁the ▁king ▁of ▁Mor oc co ▁to ▁the ▁Conference ▁of ▁the ▁Mag h reb ). ▁( 1 9 4 7 , ▁April ). ▁El ▁A hr am . ▁Wolf , ▁Jean ▁( 1 9 9 4 ). ▁Les ▁Sec rets ▁du ▁Mar oc ▁Esp agn ol : ▁L ’ ep ope e ▁D ’ Ab del kh ala q ▁Tor res . ▁Mor oc co : ▁Ball and ▁Publishing ▁Company ▁Ben ▁Bra him , ▁Moh ammed ▁( 1 9 4 9 ). ▁Il ay ka ▁Ya ▁Ni ▁Ma ▁S adi q ▁( To ▁you ▁my ▁dear ▁friend ). ▁T et uan , ▁Mor