His Majesty King Bhumibol is probably the only head of state of the world known to have initiated thousands of developmental projects for his or her country. His Majesty is a most travelled king; during his 60 years' long reign he has visited even the remotest corners of the country and so realised well what miseries his subjects have been through. That was how those development projects came about.

Development of water sources for cultivation and irrigation is indispensable and beneficial to the majority of the country's population in that it enables them to produce crops all year round.Other development projects are no less important than these two areas. In occupational promotion, especially for farmers, His Majesty emphasises on self-reliance and integrated farming to lessen risks of having to depend solely on a single crop.

Regarding public health, His Majesty believes that good physical health will lead to good mental health which will be beneficial in social and economic development of the country. Besides, the Royal Development Projects concerning public welfare provide assistance for the farmers in terms of general livelihood and occupational support. Most of those regarding environment emphasise on conservation and improvement of the natural resources and the environment. And those regarding communications involve the improvement of roads in the rural and underdeveloped areas.