Assertion: dynasty's system | /r/HasProperty | established
Facets:
Source sentences:
text: A centralized bureaucratic system was established during the reign (981–997) of King Sŏngjong to replace the old aristocratic tribal system that had governed the country.
text: Network of roads and a postal system were established to connect the vast empire.
text: A new political system - Three Departments and Six Ministries was established - the first in Chinese history.