Select all that apply .
The five characteristics of
classical civilizations are .
A . all monarchles .
B . patriarchal nature of families .
C . advanced road systems .
D . complex economic systems .
E . overpopulation .
F . complex trade systems .
G . the ability to adapt and change .
H . lasting marks on art, architecture, science, language, and literature .
what events in mexico's history might explain why the country continues to have difficulty improving social justice and economic opportunities for all people?