Jordan's flag was adopted in 1928. The flag symbolizes the Kingdom's roots in the Great Arab Revolt of 1916, as it is adapted from the revolt banner. The black, white and green bands represent the Arab Abbasid, Umayyad and Fatimid dynasties respectively, while the crimson triangle joining the bands represents the Hashemite dynasty. It features a seven-pointed star. The points of the star stand for the first seven verses of the Holy Koran, the holy book of Islam.