Answer:
Athenian democracy differ from most modern democratic systems mainly by the citizenship rights.
Step-by-step explanation:
Athenian democracy developed around Sixth century BC in the Athenian city of Greeks. Athenian form of democracy was completely unique from the modern democratic system because it granted the citizenship rights to only men those who owned property and who completed the military training.
They formed around thirty percentage of population in Athens. It refuses to give the citizenship rights to women, slaves and children. But we cant deny that Athenian democracy is the foundation of many modern democratic system.