#1) To have a job in the Koryo government, a man had to prove that he was?
Answer: To have a job in the Koryo government, a man had to prove that he was well trained in Confucianism. But in spite of this commoners had few opportunities in the government because of class prejudices and petty restrictions.
I hope it helps, Regards.
They were used as slave labourers
Yup what he said is right !
