King Bhumibol, the world's longest-reigning monarch, died at age 88 in October 2016. He belonged to ____________.
Q1. King Bhumibol, the world's longest-reigning monarch, died at age 88 in October 2016. He belonged to ____________.
Answer: Thailand
Explanation: King Bhumibol Adulyadej (Rama IX) reigned over Thailand from 1946 until his death in October 2016, making him the world's longest-reigning monarch at the time.