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1931 China floods were difficult to determine with official estimates ranging from 140,000 to 3 million people.<unk> 1931 China floods were difficult to determine with official estimates ranging from 140,000 to 3 million people. ️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️<unk>️ <unk> <unk> <unk> Consequently, civil authorities failed to take essential measures to significantly reduce overflow such as collecting sediment along the populated areas of the river.<unk> Consequently, civil authorities failed to take essential measures to significantly reduce overflow such as collecting sediment along the populated areas of the river.<unk> Consequently, civil authorities failed to take essential measures to significantly reduce overflow such as collecting sediment along the populated areas of the river.