Why did the mongols employ foreigners rathere than Cinese in high govrnment office?

What is the value of World War 1 bolo knife? Why did the end of World War 2 lead to the cold war? What was the order of battles in the civil war? Did they have cell phones in world war 1? Was life easy or hard for the samurai? How many days did it take for Iraq to conquer Kuwait? Why did the british win battles against Americans in 1814? What is a commanding statement called? Who did josef mengele marry? Can battle tanks go under water? Who won at Antietam? What happened when knights got married? How many siblings did William T Sherman have? What were the north's and south's different advantages in the civil war? What development of ships helped make exploration possible? What was the name of the commander that led americn troops in World War 1? In which geographic region did a local nationalist conflict start world war 1? What were three major innovations that came out of the World War 2? What does the phrase rich mans war and poor mans fight mean? What were the goals of Great Britain in 1939?

Why did the mongols employ foreigners rathere than Cinese in high govrnment office?