The Founding Day is one of the glories of this nation, as the first Saudi State’s banner was raised high by Imam Muhammad Bin Saud, reiterated Professor of Modern and Contemporary History at King Abdulaziz University Dr. Manal Al-Muraiteb. Since the guardianship of Imam Muhammad Bin Saud in the year 1139 AH / 1727 AH, the reins of affairs in Diriyah established the first building blocks of the current Saudi State. Imam Muhammad was known for his good conduct, loyalty and honesty. He was also brave and firm, and a man of many good deeds. During his reign, a wall of Diriyah was built in 1172 AH (1758). It consisted of two parallel walls of clay, and between them, stones to support it. Its length was 7 kilometers and it had towers. He prioritized managing its affairs and entrusted the responsibilities of the army to his eldest son and later the second ruler of the first Saudi State, Imam Abdulaziz. Dr. Al-Muraiteb stated that, ultimately the building blocks of Saudi rule began to take shape, and it succeeded in annexing most of the regions of the Arabian Peninsula and unifying it into one political unit in several stages. She explained that the founder of the first Saudi State, Imam Muhammad Bin Saud, was known for his good opinions, excellent management, and piety. “He succeeded, during a difficult historical time, in creating the foundations of the country, while dealing with a society that was not familiar with unity nor stability. And I consider my best evidence is the descriptions of the conditions of the region before the rule of the Imam.” “The country was living in constant terror between an enemy who took it by oppression and an ally who took it by treachery.” So, Imam Muhammad Bin Saud was able, with his experience and political skill, to reunite the following Diaspora, and enforce unity, on the ruins of division. He united the discordant tribes and feuding regions, established security, and made the country enjoy political stability and economic prosperity. Dr. Al-Muraiteb pointed out those 40 years old period of Imam Muhammad’s rule was full of generosity and achievement until his death in 1179 AH (1765). The first Saudi State grew to become a habitat and haven for tribes and immigrants, which led Sheikh Muhammad Bin Abdul Wahhab to reach Diriyah and settle there for its prominent political and economic position in Najd. He found support and assistance from Imam Muhammad Bin Saud. Dr. Al-Muraiteb believes that the Founding Day of the first Saudi State is recorded with the ink of pride, because of the exploits, heroism and achievements, and the historical lessons that must be remembered and written down to pass on to generations to come. It also sets an example of how to build a comprehensive national system, which deepens our national affiliation and responsibility in preserving land that has been proud and honored of its achievements for over 300 years.