Answer:
The creation of cities ( A )
An education system ( B )
An established army ( C )
Strong government leaders ( E )
Explanation:
Civilization of a society requires that the society has an education system in place for its citizens/residents, the society is supposed to have an established army to defend its territories from external and internal enemies of the state.
Having strong Government leaders will ensure that a society is properly civilized because they will create proper and strong Government policies both foreign and domestic policies that will help the society. the creation of cities will be considered a civilization process as well