Because they could, being gods of the ancient Greeks.
it is to do with Poseidon and the way he reacted, Zeus did not like it and he got involved to stop what Poseidon was doing and he made Poseidon stop what he was doing and do it Zeus' way.
Poseidon is Athena's uncle. Athena is the daughter of Zeus, and Poseidon is Zeus's brother.
yes he did
Poseidon is Zeus' brother.
Poseidon is Zeus' brother.
Yes, Poseidon does fight with Zeus.
Poseidon is the elder brother of Zeus.
no poseidon is ZEUS brother.
Zeus doesn't trust Poseidon because maybe someday Poseidon will betray Zeus
No, Zeus is. Poseidon is god of the sea
No the gods like Zeus Poseidon does not exist in the old day because he is basically a mythological god.
No Zeus did not kill Poseidon in Greek myth.