Both of those countries adopted their own flags (Sudan in 1969 and Jordan in 1928) to signal their support for a unified pan-Arab country. At the time of the revolt in 1917, rebels hoped that the ...

green and red—all four colours had been used in the flag held high by the pan-Arab revolt. The white drew on the colourless standard used by the Umayyad dynasty, which fell in 750. They adopted ...