What caused the war between the Titans and the Olympians?

• A. Cronus freed Gaia's children as promised
• B. Cronus didn't free Gaia's children as promised
• C. Gaia freed her children herself
• D. The Olympians sought help from Zeus

Answer: (B)

The key idea is the power shift after Cronus overthrows his father and then fears a prophecy that one of his own children will dethrone him. Cronus ends up imprisoning Gaia’s children—the Cyclopes and the Hecatonchires—in Tartarus, keeping them from aiding the Olympians. That act creates a deep grievance for Gaia and fuels the resistance that comes together under Zeus. When Zeus grows up, he frees his siblings and the imprisoned beings, and with their help (the Cyclopes forging Zeus’s thunderbolts and the Hecatonchires providing their strength) the Olympians challenge Cronus and the Titans. This conflict—over freeing or keeping Gaia’s children and the rightful rule of the gods—drives the Titanomachy.

If Cronus had truly freed Gaia’s children as promised, the alliance against him might not have formed in the same way, so the war would not have started for that reason. The other options don’t fit the sequence: Gaia didn’t act alone to free them, Zeus is the one who leads the Olympians in rebellion, and the idea that the Olympians sought help from Zeus misses that Zeus is the leader of the Olympian side, not a separate helper chosen later.