A census is often done every 10 years.
Answer:
option C
Explanation:
the correct answer is option C.
Korea's relationship with China is that Kumsong city was modeled directly on Chinese capital Chang'an.
Chang'an was the capital of Chinese ten dynasties.
Chinese dynasties capital influences the capital of Korea's capital Kumsong.
Korea is a bitter rival of china but it has adopted Buddhism, Daoism, exam art etc from china.
K-POP ........................................
