Complex sentence: Palden Thondup Namgyal, the Chogyal at the time, proved to be extremely unpopular with the people, and in 1973, riots in front of the Chogyal's palace led to a formal request for protection from India.
Split into simpler sentences: Palden Thondup Namgyal, the Chogyal at the time, proved to be extremely unpopular with the people. In 1973, riots in front of the Chogyal's palace led to a formal request for protection from India.