Why have some Arab states made great economic gains while maintaining many of the medieval orders?

Because these Arab states (Saudi Arabia, Kuwait, Jordan, Bahrain, United Arab Emirates, Oman, etc.) had the richest reserves of oil, which were exported. The sale of oil resources ensured a high standard of living for the population, the majority of whom were peasants and nomads. Reforms were not necessary Arab states did not need economic improvements.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.