Middle East · The modern states
Kingdom of Iraq
Constitutional monarchy · Hashemite Kingdom of Iraq, 1921/1932–1958
Modern Iraq was assembled by Britain from three Ottoman vilayets — Basra, Baghdad, and Mosul — conquered in the Mesopotamian campaign of World War I. Awarded to Britain as a Class A mandate at San Remo (1920), the territory exploded in the great 1920 revolt, which briefly united Sunni and Shia, tribe and town, against colonial rule and cost Britain dearly.
- Type
- Constitutional monarchy (under British mandate/treaty tutelage to 1932)
- Existed
- Hashemite Kingdom of Iraq, 1921/1932–1958
- Shown on the map
- 1932–1942, 1947–1957 (2 periods)
- Capital
- Baghdad
- Peak area
- ~435,000 km² (map figure; ~438,317 km²)
- Region
- Middle East
Origins & rise
Modern Iraq was assembled by Britain from three Ottoman vilayets — Basra, Baghdad, and Mosul — conquered in the Mesopotamian campaign of World War I. Awarded to Britain as a Class A mandate at San Remo (1920), the territory exploded in the great 1920 revolt, which briefly united Sunni and Shia, tribe and town, against colonial rule and cost Britain dearly. London recalibrated at the 1921 Cairo Conference: the mandate plan was scrapped in favor of a nominally sovereign kingdom under Faisal ibn Hussein, the Hashemite prince lately expelled from Syria by the French, confirmed by a 96-percent plebiscite. The Anglo-Iraqi Treaty (1922) and the Organic Law (1924–25) created a constitutional monarchy with a parliament — but one penetrated by British advisers, RAF bases, and the Iraq Petroleum Company's 75-year concession; the League awarded the Mosul vilayet to Iraq in 1925.
History & key rulers
Full independence came with the Anglo-Iraqi Treaty of 1930 and admission to the League of Nations on 3 October 1932 — the first mandate to be "graduated" — as the Hashemite Kingdom of Iraq, though Britain kept air bases at Habbaniya and Shaiba. Faisal I died in 1933; his son Ghazi (r. 1933–1939) reigned as a popular figurehead through the brutal Simele massacre of Assyrians (1933), the first military coup in the modern Arab world (Bakr Sidqi, 1936), and repeated Shia, Kurdish, and Yazidi revolts, dying in a car crash in 1939. His infant son Faisal II (r. 1939–1958) succeeded under the regency of Prince Abd al-Ilah, with the pro-British Nuri al-Said as perennial strongman. In April 1941 the "Golden Square" colonels installed Rashid Ali al-Gaylani's nationalist, pro-Axis government; Britain crushed it in the month-long Anglo-Iraqi War (May 1941) and reoccupied the country — hence the map's 1942–1947 gap — while Baghdad's ancient Jewish community suffered the Farhud pogrom (June 1941). Postwar Iraq joined the UN and co-founded the Arab League (1945), but the 1948 Portsmouth Treaty triggered the al-Wathbah uprising, and the 1952 Intifada shook the regime. Nuri al-Said's pro-Western Baghdad Pact (1955) and the short-lived Arab Federation with Jordan (February 1958) were the monarchy's last plays.
Government, religion & culture
A unitary constitutional monarchy with a king, an appointed Senate, and an elected Chamber of Deputies (universal male suffrage). In practice power circulated among a small Sunni Arab elite of ex-Ottoman officers, urban notables, and tribal sheikh-landlords, over a population — 2.8 million in 1928, 6.5 million by 1958 — that was majority Shia Arab with large Kurdish, Jewish (until the 1950–51 exodus), Assyrian, Turkmen, Yazidi, and Mandaean minorities. Oil revenues from Kirkuk and Basra began transforming the economy from the 1930s.
Peak & territory
The kingdom's territory was constant at about 435,000–438,000 km², from the Syrian desert to the Shatt al-Arab and the Kurdish Zagros foothills.
Decline & legacy
On 14 July 1958 Brigadier Abd al-Karim Qasim's Free Officers stormed Baghdad; Faisal II, Abd al-Ilah, and Nuri al-Said were killed, ending the monarchy and beginning Iraq's republican era of coups, Ba'athism, and war. The monarchy's brittle legitimacy — a foreign-imposed dynasty ruling a fragmented society through a narrow elite — prefigured the instability that has haunted Iraq ever since.
Common questions
- What was the Kingdom of Iraq?
- Modern Iraq was assembled by Britain from three Ottoman vilayets — Basra, Baghdad, and Mosul — conquered in the Mesopotamian campaign of World War I. Awarded to Britain as a Class A mandate at San Remo (1920), the territory exploded in the great 1920 revolt, which briefly united Sunni and Shia, tribe and town, against colonial rule and cost Britain dearly.
- When did the Kingdom of Iraq exist?
- The Kingdom of Iraq existed Hashemite Kingdom of Iraq, 1921/1932–1958. On this map it is drawn 1932–1942, 1947–1957.
- What was the capital of the Kingdom of Iraq?
- The Kingdom of Iraq was ruled from Baghdad.
- How large was the Kingdom of Iraq at its height?
- The kingdom's territory was constant at about 435,000–438,000 km², from the Syrian desert to the Shatt al-Arab and the Kurdish Zagros foothills.
- Who ruled the Kingdom of Iraq?
- Full independence came with the Anglo-Iraqi Treaty of 1930 and admission to the League of Nations on 3 October 1932 — the first mandate to be "graduated" — as the Hashemite Kingdom of Iraq, though Britain kept air bases at Habbaniya and Shaiba.
- How did the Kingdom of Iraq end?
- On 14 July 1958 Brigadier Abd al-Karim Qasim's Free Officers stormed Baghdad; Faisal II, Abd al-Ilah, and Nuri al-Said were killed, ending the monarchy and beginning Iraq's republican era of coups, Ba'athism, and war. The monarchy's brittle legitimacy — a foreign-imposed dynasty ruling a fragmented society through a narrow elite — prefigured the instability that has haunted Iraq ever since.
- How was the Kingdom of Iraq governed?
- A unitary constitutional monarchy with a king, an appointed Senate, and an elected Chamber of Deputies (universal male suffrage).
Sources
Every source below was consulted while writing this entry.
- Wikipedia — Kingdom of Iraq: en.wikipedia.org/wiki/Kingdom_of_Iraq
- U.S. Library of Congress Country Studies — Iraq: World War I and the British Mandate / the Hashemite monarchy: countrystudies.us/iraq/19.htm
- Encyclopaedia Britannica — Iraq: History: www.britannica.com/place/Iraq/History
This entry was written from the sources above and last updated .
This entry was researched and drafted with AI from the sources above, and has not been reviewed by a historian. How entries are made
Text available under CC BY-SA 4.0: reuse it with a credit to The World Through Time and a link to this page. Passages drawing on the Wikipedia articles listed above are also licensed CC BY-SA 4.0 by their contributors.
Border geometry for the map itself comes from Cliopatria v0.12 (Seshat Global History Databank, CC-BY-4.0).
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