King Jigme Singye Wangchuck was the fourth king of Bhutan, reigning from 1972 to 2006. He is known for his visionary leadership and the introduction of the concept of Gross National Happiness, which prioritizes the well-being of citizens over economic growth. His reign saw significant modernization and development in the country while preserving its unique culture and traditions. In 2006, King Jigme Singye Wangchuck abdicated the throne in favor of his son, Jigme Khesar Namgyel Wangchuck. This transition marked Bhutan's shift towards a constitutional monarchy, ensuring greater political participation and democratic governance. His legacy continues to influence Bhutan's policies and development strategies.