Uncle toms cabin i am pretty sure
Social classes: King
Priests
Scribes
Merchants & Artisans
Commoners
Slaves
Economic classes: calendar and irrigations (via canals and ditches), craftsmen (copper and bronze workers)
George Masón proposed a Bill of Rights.
Answer:
The Explorers were were wrong because the Natives were civilized in their own way, they did not need to convert to a European Ideology in order to be considered "Civilized"