During this period, Bahrain was under effective control of the Persian Gulf Residency and Iran regarded it under British colonial occupation.

[4] A year later in 1958 Sheikh Salman bin Hamad Al Khalifa (ruler of Bahrain) pledged allegiance to Iran.

[5] One of his predecessors, Sheikh Muhammad bin Khalifah Al Khalifa had in 1851 asked for Iranian protection against Wahabbis and declared his preparedness to be a Qajar Iran protectorate.

[7] During Safavid Iran, Bahrain was subordinate to Bushehr governorship and Zubarah (located in modern-day country of Qatar) was its capital city.

[8] The province officially ceased to exist with a resolution approved by the lower house on 14 May 1971 with 184 votes to 4, and unanimously approved by the upper house on 18 May 1971; and Iran recognized Bahrain as an independent sovereign state.