The flag of Morocco (Arabic: علم المغرب) is the flag used by the government of Morocco which served as the national flag of Morocco since 17 November 1915. It is a red field with a green star in the center. The green star represents the five pillars of Islam and the red represents the blood of the ancestors and unity. Red has considerable historic significance in Morocco, proclaiming the descent from royal 'Alawid dynasty. This ruling house was associated with the Islamic prophet Muhammad via Fatimah, the wife of Ali, the fourth Muslim Caliph. Red is also the color that was used by the sharifs of Mecca and the imams of Yemen. From the 17th century on, when Morocco was ruled by the 'Alawid dynasty, the flags of the country were plain red. The pentagram represents the seal of Solomon, an Islamic symbol. The five branches also represent the pillars of Islam. (Source: Wikipedia.org, CC BY-SA)