One important characteristic of a complex society is the existence of A: a ziggurat

B:an irrigation ditch

C: family units

D: a codified religion

E: permanent structures

D: a codified religion

Explanation:

Complex societies are characterized by varied complex systems which may be in the form of laws or legal systems, large population and specialized labour in economy , monuments, large scale agricultural and developed political structures and government, social hierarchy, record keeping. Complex society concepts were formed to study modern societies and how they transited from small simple societies to big hierarchically structured ones

on april 6, 1917, the u.s. joined its allies--britain, france, and russia--to fight in world war i. under the command of major general john j. pershing, more than 2 million u.s. soldiers fought on battlefields in france.

i think its a hope this