The correct answer is <span>D. were mostly independent city-states.
They were ruled by different rulers and had their own laws and similarities and differences, similarly to how Italy functioned during the renaissance period.
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Americans tried to civilize the Native Americans through the Washington Administration who embraced a program to civilize native people, transforming Indians from tribal peoples into individuals who could be easily adopt the ways of another culture into American Society. The program promotes commercial agriculture, Christianity, an alteration in the gender-based divisions of labor among Indians and most importantly private ownership of land.
I think the constitution prohibits the enactment of ex post facto.
Chinese River Valley civilization<span>although it was from 8000 to 2000 BCE
They used the river for irrigation and they raised pigs and chickens. Used stone tools</span>