The best answer is industrial: it makes sense for people to settle in industrial regions, as they can hope to find work there. Other options refer to the distribution of people, such when people are from many cultures (multicultural) but this was not something people in 19th century searched for most, instead they wanted good job opportunities.
Incremental analysis is an analytical approach that focuses only on those revenues and costs that will not change as a result of a decision.
The costs could be regarded as a sunk cost which was used in the past. Any change in policy or decision making by a management wouldn’t have any effect on these costs/revenue.
