One item that native Americans wouldn't trade was land since they believed that the land belonged to everybody and the concept of private property was anathema to them. They would trade the fruits of the land like the animal furs but not the land itself.
The land of ordinance viewed native americans as Utmost good faith
New slaves from Africa were imported in Southern plantations.
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The primary causes were that Sparta feared of the growing power and influence of the Athenian Empire. The Peloponnese war began after the Persian Wars ended in 449 BCE. ... This disagreement led to friction and eventually outright war. Additionally, Athens and its ambitions caused increasing instability in Greece.
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