Answer:
chain reaction.
Explanation:
thats what its called, or the domino effect
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,
$\frac32=\frac{220}{8\times3\times d}$
$\implies d=\frac{55}9=6.12$
The answer would be A. high taxes, you would not NEED high taxes, although that is what the government wanted.
Inca were known for their cruelty and often killed people, but they would not be killed. Rather, they would be separated and sent to different regions, sometimes where other languages were spoken, to make it impossible for them to organise further rebellions.
The correct answer to this question is B. NAFTA has established the largest free trade zone in the world.