Chap 1 Based on the context clues, What do you think the term "unforeseen wastage's" is a euphemism for?

The above quote directly relates to population replenishment. In this context, they are discussing replacing laborers after "unforeseen" disasters and multiple loss of lives. Unforeseen wastage is a euphemism for the numbers of deaths in a catastrophe, and an increase in production to make sure those losses are replaced.