<span>American Imperialism is the true economic, military, and cultural influence of the united states on other countries. such influence also goes hand in hand with expansion into foreign territories. Expansion on a grand scale is the primary objective of an empire, a notable example being the british empire. The concept of an American Empire was first popularized during the presidency of James K. Polk. </span>
Knights of Saint John of Jerusalem
Social classes: King
Priests
Scribes
Merchants & Artisans
Commoners
Slaves
Economic classes: calendar and irrigations (via canals and ditches), craftsmen (copper and bronze workers)
I think the answer is the United States