(CNN)Winston Churchill's policies caused a famine that claimed more than 3 million Indian lives, according to a new study using soil analysis for the first time to prove the origins of the disaster.
Churchill's policies to blame for millions of Indian famine deaths, study says
The 1943 Bengal famine was the only famine in modern Indian history not to occur as a result of serious drought, states the report, which was conducted by researchers in India and the United States.
"This was a unique famine, caused by policy failure instead of any drought," Vimal Mishra, the lead researcher and an associate professor at the Indian Institute of Technology Gandhinagar, told CNN.
Researchers used weather data to gauge the amount of moisture in the soil during six major famines in the subcontinent between 1870 and 1943.
"There have been no major famines since independence," said Mishra. "And so we started our research thinking the famines would have been caused by drought due to factors such as lack of irrigation."
They found that five of the famines were largely caused by droughts, but in 1943, at the height of the Bengal famine, rain levels were above average, according to the study published in the journal Geophysical Research Letters.
"The Bengal famine of 1943 was completely because of policy failure," Mishra said.
Policy lapses such as prioritizing distribution of vital supplies to the military, stopping rice imports and not declaring that it was actually a famine were among the factors that led to the magnitude of the tragedy, he added.
Mishra said examining previous famines showed that policy could be effective. "In the 1873-74 famine, about 25 million people were affected, but mortality was almost negligible."