Final answer:
Cleisthenes is traditionally known as the founder of Greek democracy, having introduced reforms in 508 BCE that allowed all male citizens of Athens to vote and hold public office, establishing the first real democracy with a system of direct democracy.
Step-by-step explanation:
The individual traditionally known as the founder of Greek democracy is Cleisthenes. Around 508 BCE, Cleisthenes implemented revolutionary reforms in Athens, allowing all male citizens, including those who were poor and previously without political power, to vote and participate in government. These reforms by Cleisthenes transitioned Athens into what is considered the first real democracy in history, characterized by its system of direct democracy. This Athenian model influenced later democratic systems around the world, despite only a fraction of the population being eligible to participate. Before Cleisthenes, the Athenian ruler Solon laid down initial democratic reforms, including allowing male citizens to vote on local leaders, but it was Cleisthenes who expanded these freedoms significantly to a broader citizenry.