In 1383 AH (1964 AD) King Saud fell ill and was no longer able to act in the affairs of government, which necessitated his dismissal in 1384 AH, and the appointment of his brother Faisal in his place, and in 1388 AH (1969 AD) King Saud died in Athens, Greece.
After King Faisal came to power, he worked on several issues, most notably, working on joining King Abdulaziz University to the state and converting scientific colleges and institutes into a university that later became Imam Muhammad bin Saud Islamic University. He also worked on converting the College of Petroleum into the University of Petroleum and Minerals. During his reign, the Arab-Israeli conflicts took place and in the war of the tenth of Ramadan 1393 AH corresponding to the sixth of October 1973 AD, when Saudi Arabia was one of the countries participating in the war, and he ordered to cut off the supply of oil to the countries supporting Israel, so he was financially and morally supportive of that issue until he was killed in the year 1395 AH ( 1975 AD).
In the year 1395 AH / 1975, King Khalid assumed power. During his reign, the Kingdom witnessed a remarkable development in construction and development. He presided over many local and regional conferences in various political, economic and social fields. He chaired several Islamic conferences. He is considered one of the founders of the Gulf Cooperation Council, and he attended the first summit conference. which was held in the year 1401 AH (1981 AD). His reign was characterized by economic prosperity, so he worked on developing a number of facilities, and the educational renaissance witnessed a great development, as King Faisal University in Dammam and Umm Al-Qura University were inaugurated in Makkah Al-Mukarramah.
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