Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
The Hashemite Standard, The Banner of Ashrāf of Hijaz(The Nobles), the House of The Hashemites
The flag of Jordan, officially adopted on 16 April 1928, is based on the 1916 flag of the Arab Revolt against the Ottoman Empire during World War I. The flag consists of horizontal black, white, and green bands that are connected by a red chevron. The colours are the Pan-Arab Colors, respectively representing the Abbasid (black band), Umayyad (white band), and Fatimid or Rashiduncaliphates (green band). The red chevron is for the Hashemite dynasty, and the Arab Revolt.
Features
In addition to the bands and chevron, a white star with seven points is featured on the hoist side of the red chevron. The star stands for the unity of the Arab people; its seven points refer to the seven verses of Al-Fatiha as well as the seven hills Amman was built on.