He had to overthrow his father, Cronus. To do so, he and the other original (Olympian) gods (Hades, Hera, Poseidon, Demeter, and Hestia) had to stage a war against the Titans, which they eventually won.
1
Zeus become the king of the gods after banishing his father, before humans were created, is still the king of the gods now.
Cronus
Zeus became king of the Olympian Gods after he and his siblings overthrew his father Cronus who was king of the Titan gods before him.
Zeus become the king of the gods after banishing his father, before humans were created, is still the king of the gods now.
Zeus was not a Greek Hero, but was the King of the Greek Gods. He father was the Titan, Cronus.
Zeus was the only offspring of Cronus that was not swallowed by Cronus. Zeus then went on to overthrew his father to become Father of Gods and men.
Because in mythology Zeus is the God of the skies. Poseidon, Zeus & Hades drew lots to see who would become the king of the Gods an Zeus won.
When they defeated the titans, their parents, Zeus took over and both his brothers submitted to his rule.
war of the titans
Zeus's greatest acheivement is simply the fact that he was able to overthrow his father Kronos and become king of the gods
Kronos did not die. Zeus and his siblings dethroned him and sent him to the underworld. They then divided the powers between them.