The canal work in the Inba marsh failed, disasters such as fires in Edo and a large-scale eruption of Mt. Asama occurred, and the Tenmei Famine took place in weakened rural areas, causing food shortages and epidemics.
印旛沼運河工事の失敗や江戸の火事・浅間山の大噴火などの災害の勃発、疲弊した農村部に天明の大飢饉と呼ばれる食糧難や疫病が生じた。