Rashidun Caliphate (The Ancient Lives On)

The Rashidun Caliphate was the first Islamic nation. It was established by the followers of Islam after Muhammad died in 632.

Conquests
In the year 632, the Rashidun Caliphate has begun to conquer the rest of Arabia. In 634 to 635, they decimated the christian Ghassanids and Lakhmids. In 639, they attacked the Kingdom Of Egypt.

Egypt surrendered to the Rashidun in 643 when the Arabs conquered Memphis, and killed the Egyptian pharaoh Aruk II., bringing an end to the Kingdom Of Egypt.

After the Arab conquest, an autonomous state known as the Principality Of Egypt, was established. The principality was  de jure under control of the Caliphate, but it was de facto independent.

Breakup
In the year 661 the Caliphate has collapsed and has been replaced by the Umayyad Caliphate. The Principality Of Egypt still exists after this conquest, until its independence in the year 773.

Flag
The flag of the Rashidun Caliphate consist simply of a black background with a white text saying "Allahu Akbar".