What is a triumvirate
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A group of three men holding power, in particular the unofficial coalition of Julius Caesar, Pompey, and Crassus in 60 BC and a coalition formed by Antony, Lepidus, and Octavian in 43 BC.

A triumvirate is three men that hold power.

The First Triumvirate consisted of Julius Caesar, Pompey, and Crassus in 60 BC.

The Second Triumvirate was a coalition formed by Antony, Lepidus, and Octavian in 43 BC.

Explanation:

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.