addis ababa speaker ethiopia low house parliament submit resignation sunday one highest-ranking officials since rule eprdf coalition come power 1991. abadula gemeda disclose reason behind decision say would disclose factor move approve parliament analysts horn africa country say abadula ethnic oromo may decide step owe disapproval government response unrest roil ethiopia oromiya region 2015 2016. violence force government impose nine-month state emergency lift august give existence circumstances enable continue position submit resignation political party house people representatives say short speech national television disclose reason behind decision request review house people representatives former defense minister add unrest provoke development scheme capital addis ababa dissidents say amount land grab turn broad anti-government demonstrations politics human right abuse include attack businesses many foreign-owned include farm grow flower export april government-sanctioned investigation say 669 people kill one period violence 29,000 people arrest speaker ethiopian parliament submit resignation