During one event of this type, a mule-like animal was reported to have emerged from a chasm and began speaking with a human voice. That 749 CE event of this type led to the abandonment of the city of Hippos. Trajan’s consul Marcus Vergilianus was killed during one of these events, although Trajan managed to escape with only minor injuries. Sparta’s refusal of (*) Athenian assistance during a helot uprising caused by one of these events (10[2]-5[1])led to the First (10[1])Peloponnesian (10[1])War. (-5[1])A device used in ancient China to detect (10[1])these events worked by having a (10[1])ball fall into the mouth of a bronze frog. (10[1])An event of this type in 226 BC destroyed the Colossus of Rhodes. Poseidon’s trident was believed to cause, for 10 points, what kind of natural disasters caused by seismic activity. ■END■ (10[1])