More job opportunities (factories/industries)
Urbanization
worked for minimum wages
Consumer preferences and spending, not the government, drive what types of products and services companies offer. The government allows you to choose any type of business or field that you are interested in owning or seeking employment.
Answer:
i dont know. IT MUST BE A CONSPIRACY!!!
Explanation:
har har
assuming efficiency of each man to dig trench, in one day, for one hour is constant,

so one man, working for one hour in one day can dig 1.5 m
so 8 men, working 3 hours a day and will take, say $d$ number of days and efficiency will be constant. so,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$