* The rise of the polis: The polis, or city-state, was a fundamental political unit in ancient Greece. The polis was characterized by a high degree of citizen participation in government and a strong sense of civic identity. This made it difficult for any one person or group to maintain power for an extended period.
* The development of democratic institutions: The Greeks developed a number of democratic institutions, such as the assembly, the council, and the courts. These institutions gave citizens a voice in government and helped to prevent the concentration of power in the hands of a few individuals.
* The Peloponnesian War: The Peloponnesian War (431-404 BCE) was a devastating conflict between Athens and Sparta. The war weakened both cities and led to the rise of new powers in Greece.
* The Macedonian conquest: In 338 BCE, Philip II of Macedon defeated the Greek city-states at the Battle of Chaeronea. This victory led to the Macedonian conquest of Greece and the end of the Greek city-state system.
These are just some of the reasons why tyranny, democracy, oligarchy, and monarchy lost power in ancient Greece. The complex and dynamic political landscape of ancient Greece made it difficult for any one form of government to maintain power for an extended period.