970 until 1018 , a series of conflicts Hostile_encounter between the Bulgarian Empire and the Byzantine Empire led to Causation the gradual conquest Conquering of Bulgaria by the Byzantines , who thus re-established Recovering their control Control over the entire Balkan peninsula for the first time since the 7th-century Slavic invasions Attack .

The constitutionalist forces marched Motion_directional to Tehran , forced Request Muhammad Ali Shah 's abdication in favor of his young son Ahmad Shah Qajar and then re-established Creating the constitution in 1909 .

It was only following Self_motion the collapse of the Türgesh khaganate after 738 that the Arabs re-established Recovering their rule over Transoxiana .

The HV later re-established Recovering overland links with the city which had been under siege by the JNA since late 1991 .