Dalian
they formed the delian league because they had to join toegether to defeat the Persians
There were several - Delian League, Peloponnesian League, Achaean League, Ionian League, Aetolian League, Beotian League etc, etc.
The Peloponnesian League was formed by the city-state of Sparta largely from the cities in the Peloponnesian pensula (southern Greece) excluding Argos.
It is true that about 180 Greek city-states formed the Delian League to protect themselves from Persian rule. Not sure why 'why' would be 'true of false'.
The members of the Delian League, which was formed under the leadership of Athens ranged from 150 to 173 Greek city-states.
It was formed under the leadership of Athens to oppose Persian attempts to incorporate about 200 Greek city-states within its empire. The league funds were located in a temple on the island of Delos, which gave the anti-Persian league its name.
I believe it was the Hanseatic League
The Spartan-led Peloponnesian League was formed to oppose the Athenian empire interfering in dominating and pillaging other Greek city-states. Democracy had nothing to do with the 27-year war which ensued.
The Peloponnesian League was created by Sparta and its allies to dominate trade and government in the Greek city-states.
in 4000000bc
When Persian agression became a serious problem for the Greek city-states under Darius I, Athens organised a self-protection group - the Delian League - which enabled the small group city-states to collaboratively defend themselves against the Persian military superpower. Over time Athen's dominance over the Delian league began to worry other Greek city states, who thought Athens had become more of a threat than Persia. Eventually Sparta formed the Peloponnesian League, and in time the two new power blocks found themselves at war with each other.
It was an alliance of city-states, mostly from Asia Minor and the Aegean islands, led by Athens to protect themselves from Persian dominance after the Persian invasion of mainland Greece was repelled. After 30 years of fighting, the the Persian Empire agreed to stay away from those city-states, and Athens opportunistically converted the League into an empire of its own and lived high on the proceeds.