The Final End of Athenian Democracy. A year after their defeat of Athens in 404 BC, the Spartans allowed the Athenians to replace the government of the Thirty Tyrants with a new democracy. Only a decade later Sparta had been reduced to a shadow of its former self. But Thebes' dominance of Greece would be short-lived.
<span>They mainly established sea trade routes, which helped in the spread of ideas and goods</span>
The Soviet Union didn't fall until 1991.
I would say the U.S. Government is a republican democracy.