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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
Answer:
The motivations for the first wave of colonial expansion can be summed up as God, Gold, and Glory: God, because missionaries felt it was their moral duty to spread Christianity, and they believed a higher power would reward them for saving the souls of colonial subjects; gold, because colonizers would exploit resources
Explanation:
there ya go :)
Answer:
that is irrelevant watch somthing els