6 dated entries naming Azerbaijan (Iran), drawn from 6 separate years between 730 CE and 1947 CE. Nothing here is written by us: each line is the sentence a Wikipedia year article used, and the link beside it opens the exact revision.
Also written as Adharbayjan in the source articles; Wikipedia redirects those to the same subject, so their entries are on this page.
730December 9 – Battle of Marj Ardabil: The Khazars under Barjik invade the provinces of Jibal and Adharybaydjian. He defeats an Umayyad army (25,000 men) at Ardabil (Iran), killing al-Jarrah ibn Abdallah.source
9th century
816Babak Khorramdin, Persian military leader, revolts against the Abbasid Caliphate in Azerbaijan (approximate date).source
10th century
9277 December – The Sajid emir of Adharbayjan, Yusuf ibn Abi'l-Saj is defeated and captured by the Qarmatians near Kufa.source
14th century
1312October 13 – Özbeg Khan, the Mongol ruler of much of Russia, demands that the Middle East Mongol ruler Öljaitü cede to him the Azerbaijan territory of modern-day Iran.source
20th century
1946December 12 – Iran crisis of 1946: Iranian troops recapture the Azerbaijan province.source
1947December 12 – The Iranian Royal Army takes back power in the Azerbaijan province.source