Hashemite Kingdom of Jordan
Who & why: the March 1946 Treaty of London ended the British Mandate, and Emir Abdullah I was proclaimed king of the Hashemite Kingdom of Transjordan two months later. The Hashemite dynasty descends from the Sharifate of Mecca, through Sharif Hussein bin Ali, who led the 1916 Arab Revolt. In the 1948 war Transjordan took control of the West Bank, annexing it in 1950 (the kingdom was renamed Jordan the following year); Jordan formally relinquished its legal and administrative claims to the West Bank in 1988. The kingdom has been a comparatively stable constitutional monarchy since independence.
What it represents: black, white, and green horizontal bands (representing the Abbasid, Umayyad, and Fatimid caliphates respectively) with a red chevron bearing a white seven-pointed star at the hoist, a design descended from the 1916 Arab Revolt flag and in use, unchanged, since 1928.
Both sources date the current flag to 1928, before this era begins in 1946, so the flag was already in use at the start. Wikipedia's infobox gives the adoption as 16 April 1928; Flags of the World dates it April 1928.
- Flag of Jordan — Wikipedia compiled
- Jordan — Flags of the World (CRW Flags) compiled
Not established: Only the year the current flag was adopted was compared; the design and the swatch colours were not checked against a specification.