Answer:
The answer is labor shortages.
Explanation:
A labor shortage can be defined as a condition related to the economy in which employers consider that there are not the necessary qualified candidates or employees who can be in charge of the different demands concerning the marketplace.
This situation is usually considered by economists as "an insufficiency in the labor force." Wage levels are considered a factor to measure a labor shortage. However, that factor is not usually related to the way through which people perceive things.
Answer:
depression, illness, social pressure
Explanation:
common sense, don't fully trust, but its my best guess.
Answer:
They transported water from mountains to the cities.
Explanation: Water was always important for us humans as our source of minerals and to relieve dehydration. Many people had to work at this because of that reason