About 8.5 million Japanese civilians were displaced from their homes between 1943 and 1945 as a result of air raids on Japan by the United States Army Air Forces (USAAF) during World War II. ... After American bombers started to devastate entire cities in 1945, millions more civilians fled to the countryside.
Because of increasing sea ice.
In climate change taking place since then, there has been an opposite problem. Beginning in the late 19th century, a reduction of sea ice has been progressing in the Arctic regions. The pace of ice mass loss has been accelerating especially since the 1970s. In the first decade of the 21st century, Greenland's ice loss accelerated at a rate of 30 gigatonnes a year.
The raising of the real wage of England (due to the shortage of labour as a result of the reduction in population), a trait shared across Western Europe, which in general led to a real wage in 1450 that was unmatched in most countries until the 19th or 20th century.
