Saffarid dynasty (complete list) – Amr ibn al-Layth, Amir (879–901) Tahir ibn Muhammad ibn Amr, Amir (901–908) al-Layth ibn 'Ali, Amir (908–910) Muhammad ibn Ali ibn al-Layth, Amir (910–911) Al-Mu'addal, Amir (911) Amr ibn Ya'qub, Amir (912–913) Ahmad ibn Muhammad, Amir (922–963) Khalaf ibn Ahmad, Amir (963–1002) Samanid Empire (complete list) – Isma'il ibn Ahmad, Amir (892–907) Ahmad Samani, Amir (907–914) Nasr II, Amir (914–943) Nuh I, Amir (943–954) Ibrahim ibn Ahmad, Amir (947) Abd al-Malik I, Amir (954–961) Mansur I, Amir (961–976) Nuh II, Amir (976–997) Abd al-Aziz ibn Nuh, Amir (992) Mansur II, Amir (997–999) Abd al-Malik II, Amir (999) Isma'il Muntasir, Amir (1000–1004) Ziyarid dynasty (complete list) – Mardavij, Emir (930–935) Vushmgir, Emir (935–967) Bisutun, Emir (967–977) Qabus, Emir (977–981) Buyid, Emir occupation (977–997) Qabus, Emir (997–1012) Yemen Yemeni Zaidi State (complete list) – al-Hadi ila'l-Haqq Yahya, Imam (897–911) al-Murtada Muhammad, Imam (911–913) an-Nasir Ahmad, Imam (913–934 or 937) al-Muntakhab al-Hasan, Imam (934–936 or 939) al-Mukhtar al-Qasim, Imam (936–956) al-Mansur Yahya, Imam (934–976) ad-Da'i Yusuf, Imam (977–999) al-Mansur al-Qasim al-Iyyani, Imam (999–1002) Europe Europe: Balkans First Bulgarian Empire (complete list) – Simeon I, Emperor (893–927) Peter I, Emperor (927–969) Boris II, Emperor (969–971) Roman, Emperor (977–991) Samuel, Khan (997–1014) Byzantine Empire (complete list) – Leo VI the Wise, Co-Emperor (870–886), Emperor (886–912) Alexander, Emperor (912–913) Constantine VII Porphyrogennetos, Junior Co-Emperor (908–913, 920–945), Emperor (913–920, 945–959) Romanos I Lekapenos, Emperor (920–944) Christopher Lekapenos, Junior Co-Emperor (921–931) Stephen Lekapenos, Junior Co-Emperor (924–945) Constantine Lekapenos, Junior Co-Emperor (924–945) Romanos II, Emperor (959–963) Nikephoros II Phokas, Emperor (963-969) John I Tzimiskes, Emperor (969-976) Basil II, Junior Co-Emperor (960–976), Emperor (976–1025) Emirate of Crete (complete list) – Muhammad ibn Shu'ayb al-Zarkun, Emir (c.895–910) Yusuf ibn Umar ibn Shu'ayb, Emir (c.910–915) Ali ibn Yusuf ibn Umar, Emir (c.915–925) Ahmad ibn Umar, Emir (c.925–940) Shu'ayb ibn Ahmad, Emir (940–943) Ali ibn Ahmad, Emir (943–949) Abd al-Aziz ibn Shu'ayb, Emir (949–961) Duchy / Kingdom of Croatia (complete list) – Muncimir, Duke (892–910) Tomislav, Duke (910–925), King (c.925–928) Trpimir II, King (928–935) Krešimir I, King (935–945) Miroslav, King (945–949) Michael Krešimir II, King (949–969) Stephen Držislav, King (969–997) Svetoslav Suronja, King (997–1000) Gojslav, co-King (1000–c.1020) Principality of Serbia (complete list) – Petar, Prince (892–917) Pavle, Prince (917–921) Zaharija, Prince (922–924) Časlav, Prince (c.927–c.960) Duklja (complete list) – Petar, Archon (c.1000) Jovan Vladimir, Prince (c.1000–1016) Europe: British Isles Great Britain: Scotland Kingdom of Scotland/ Kingdom of Alba