The flag of Jordan is based on the flag of the Arab Revolt against the Ottoman Empire during World War I .The flag is black,white and green that are all connected by a red triangle.The colors stand for the Abbasid, Umayyad and Fatimid Caliphates. The red triangle is for the Hashemite dynasty and the Arab Revolt. The seven pointed star, has a meaning. It stands for the seven verses of the first surah in the Qur'an, and also stands for the unity of the Arab peoples. Some believe it also refers to the seven hills on which Amman, the capital, was built.
The colors of the Jordanian flag are those of the Pan-Arab flag. They were first used in 1917 to represent "pan-Arabianism," which sought independence from the Ottoman Empire.