Which is not a necessary feature of civilization
a. food supplies beyond what farm families need
b. animals
c. cities
d. division of labor

Explanation:

Animals are not necessary a civilisation characteristic, because a civilisation is a complex society that has achieved some improvements, like food storage, constructions of cities, division of labor according to specific roles, and animals don't refer to that kind of improvement practice.

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explanation:

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity