The Death Railway is, in short, a horrendous part of Thailand’s history that was created by the blood and sweat of WWII prisoners of war and Asian slave laborers.
During WWII, the Imperial Japanese Army had taken over South East Asia and accumulated tens of thousands of skilled and healthy prisoners of war, which were later used as laborers to support their war effort.
One of the major projects that these POWs were funneled to work for was constructing a railway. These men, along with many other Asian laborers simply looking for work, were assigned to build the railway. It originated in Thailand and cut across to the Burmese war front to aid in the Japanese invasion of India.