Answer:
Because 12 table system had every sort of law and that was effective a long time
Explanation:
He used 12 table systems of Roman laws because that sort of law had every law in those 12 tables and that included family laws, marriage laws, debt and trial laws, punishment laws, relationships with citizens. People were familiar already with those laws.
Justinian used this system as the foundation and changed it a bit, and also he simplified it in one document and it was called Justinian's code.
The Crusades
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The answer is D. He placed family members in charge of regions.
The land of Zhou was a vassal state of the Shang Dynasty. A powerful leader of the Zhou named Wen Wang began to plan to overthrow the Shang Dynasty. The Zhou Dynasty was divided up into the Western Zhou and Eastern Zhou periods. It extended its power over the eastern plain by granting authority to members of the royal family and in some cases to favored adherents, that established walled forts supported by garrison troops among the original habitants of the east.