The 16th amendment to the United States constitution allows congress to levy a tax on income.
Answer: they had complex societies
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Explanation:
During the Golden Age, Athens created an alliance among the city-states. This is called the Delian League. During this alliance formation. Athens became powerful among the allies because of the military conditions it has. This made other city-states resentful of Athen's power and decided to leave the league but they were forced to stay. Soon it helped Athens become an Empire.
