Why did many European engineers and artists of the 15th-16th c. prefer to serve the Turkish sultan rather than their kings and princes?

The more extensive the ruler’s possessions, the greater the share of income he can devote to the development of science and art – the Sultan of Turkey was richer and therefore more generous than any European king.

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.