Mr. John Lewis was one of the pioneering leaders of Civil Rights Movement in the 1960, and he kept on battling for individuals' rights since joining Congress in 1987. Lewis was a Freedom Rider, talked at 1963's March on Washington and governs the exhibition that became up popular. He was chosen to Congress in 1986 and got the Presidential Medal of Freedom in 2011.
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 British had tons of internal and domestic problems to face their own, so basically from the beginning (early 1600's) they entered into a period of salutary neglect (where they didn't enforce their own laws)
Hope this helps!
Answer:
because they can
Explanation:
they mostlikley they didnt want to be killed
General Belisarius is known for expanding the byzantine empire